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Programmable Current/Voltageand RTD/Thermocouple Limit Alarm Trips

SPA2

SPA

READY INPUT TRIP 1 TRIP 2 TRIP 3 TRIP 4

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2

16.248MA

The SPA2 features a metal, RFI resistant housing withdisplay that snaps onto standard DIN-style rails.

June 2004

DescriptionThe universal SPA2 Programmable Limit Alarm Tripsprovide on/off control, warn of unwanted processconditions, alarm on rate-of-change and provideemergency shutdown. Very versatile, they accept asignal input from transmitters, temperature sensorsand a wide array of other monitoring and controlinstruments:

• Current and Voltage Signals

• 23 RTD Types

• 9 Thermocouple Types

• Resistance and Potentiometer Devices

• Direct Millivolt Sources

Dual and Quad Alarm Trip OutputsThe 4-wire (line/mains-powered) SPA2 provides two orfour independent and individually-configurable alarmrelay outputs when a monitored process variable fallsoutside of user-set high and/or low limits. This istypically used to activate a warning light, annunciator,bell, pump, motor or shutdown system.

Features• Universal plant standard. There’s no need to

stock dozens of different fixed range alarm trips.

• 20-bit input resolution. Delivers industry-bestdigital accuracy for both sensor (RTD andthermocouple) and analog (current/voltage) inputs.

• Site- and PC-Programmable. Featuring securitypassword protection, the SPA2 offers the choice ofusing front panel pushbuttons or ourWindows®-based Intelligent PC ConfigurationSoftware for fast and simple set up.

• Long-term stability. Provides up to 5 yearsbetween scheduled calibrations.

• Large 5-digit process and status readout. Adisplay shows menu prompts during pushbuttonconfiguration and, when the SPA2 is in operation,shows the process variable, the output or togglesbetween the two in selectable engineering units.

• Combined alarm trip and transmitter. The analogoutput (-AO) option reduces costs and installationtime when both alarm and transmitter functions areneeded at the same location.

• Isolated and RFI/EMI protection. Deliverssuperior protection against the effects of groundloops, and plant noise, radio frequency andelectromagnetic interference.

CE Conformant – EMC Directive 89/336/EECEN 61326; Low Voltage Directive 73/23/EEC EN 61010

Certifications

2004 Moore Industries-International, Inc.224-710-08A

Figure 1. Available SPA2 models deliver versatile andprogrammable input and output choices.

ProgrammableInput

mAV

RTDT/C

ohmsmV

ProgrammableOutput

Dual RelayQuad Relay

(Trip Points,High Alarm, LowAlarm, Failsafe,Non-Failsafe,

Normally Open,Normally Closed)

Analog Output(optional)

4-Wire (Line/Mains) Powered24Vdc, 110Vdc or 90-260Vac


SPA2

Site- and PC-ProgrammableOperating parameters configure quickly and easilyusing front panel pushbuttons or our Intelligent PCConfiguration Software. Programmable functionsinclude:

• Security password protection on/off and password

• Input type and measurement range (zero and full scale values)

• Input and output trimming

• High or low alarm(s) with trip points

• Failsafe or non-failsafe, and normally openor normally closed alarm relays

• Alarm deadband (0-100%) and alarm timedelay

• T/C reference junction compensation (on/off)

• Display parameters (scale, engineering units, andset number of digits after the decimal point)

• Differential or averaging of RTD inputs

• Standard and custom linearization curves (up to 128 points)*

• Analog output range**

• On input failure, upscale or downscale drive, fail tolast value or fail to selected value**

• Analog signal output damping (0-30 seconds)**

*Programmable via the PC Configuration Software only.

**Models with Analog Output (-AO) option.

Powers a 2-Wire TransmitterThe SPA2 (HLPRG: current/voltage input model)comes standard with 2-wire transmitter excitation thatprovides 24Vdc to power the loop. This saves the costof specifying and installing an additional instrumentpower supply to power a 2-wire transmitter on theloop.

Figure 3. In addition to pushbutton configuration, the SPA2

programs quickly from a single software window.

Versatile Alarm OptionsEach individually-configurable SPA2 alarm trip relayprograms via the PC software as a:

High or Low Limit Process Alarm—Monitor atemperature, pressure, level, flow, position or statusvariable, and use to warn of unwanted processconditions (Figure 4), provide emergency shutdown orprovide on/off control (Figure 5).

Rate-of-Change Alarm—Monitor an input for achange in value with respect to time (Figure 6). Thealarm trips when the input rate-of-change exceeds auser-selected rate (Delta) over a user selected timeperiod (Delta Time).

Input Fault Alarm—Setting one of the alarm’s relaysto trip on input or self-diagnostic failure (withoutaffecting the other relay being used to monitor theprocess) is typically implemented to warn of a failure,such as a broken sensor, without tripping morecritical process alarms or shutting down the process.

Self-Diagnostic Alarm—The SPA2 checks its ownoperation and configuration upon start up, and thencontinuously monitors its status during operation.One of the SPA2’s relays can be configured to trip ifit senses that it is not operating properly.

Quick Ranging CalibrationUsing the front panel pushbuttons or the PC Configura-tion Software (instead of potentiometers which candrift), precise zero and span settings can be made inseconds. Just select the zero and span values, andthe push of a button locks the values into the alarmtrip’s memory.

+TX

+IN

+

–

Figure 2. The SPA2 provides transmitter excitation to power a2-wire transmitter.

SPA(HLPRGInput)

24VdcPowerInput

4-20mA

LoopPower

2-WireTransmitter


SPA2

SPA


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2

12.793MA

Figure 4. High and/or low limit alarms, with a selectabledeadband to reduce false alarms, can be used to warn ofunwanted process conditions or to provide emergency shutdown.

Combination Alarm andIsolated TransmitterWhen ordered with the Analog Output (-AO) option,the SPA2 provides a proportional and isolated analogretransmission of the input signal that can be sent toremote monitoring/control devices like a DCS, PLC,PC, indicator or data recorder (Figure 7). All analogparameters can be selected using the SPA2

pushbuttons or the Intelligent PC ConfigurationSoftware. Upon input failure, the analog output canbe user-set for upscale or downscale drive or fail tolast value.

Figure 5. The SPA2 can be used as a simple on/off controllersuch as those required in level applications (pump/valve control)when filling or emptying a container or tank.

Figure 6. The SPA2 can be set to trip when the input rate-of-change exceeds a user-selected rate (Delta) over a user-selected time period (Delta Time).

Time

Input

Alarm StateNon-Alarm State

LIMIT ALARM TRIP

High Alarm

Trip Point

Deadband

High AlarmTrip Resets

Low AlarmTrip Point

Low AlarmTrip Resets

Deadband

Time

Input

ON Trip Point

Relay ONRelay OFF

ON/OFF CONTROLLER

OFF Trip Point

OFF Trip Point

Time (t)

Temperature (T)

> limit

Alarm StateNon-Alarm State

RATE-OF-CHANGE ALARM

∆T∆t

∆T

∆t

Superior Reference JunctionCompensationUncompensated plastic terminals are very susceptibleto ambient temperature changes that may result inreadings that are “off” by several degrees. SPA2

models that accept temperature inputs (TPRG input)feature metal terminals and advanced electroniccompensation techniques that provide a stablemeasurement in fluctuating ambient temperatureconditions.

Continuous Self-DiagnosticsIncorporating advanced self-diagnostics, the SPA2

checks its own operation and configuration upon startup and then continuously monitors its status duringoperation. If it senses that it is not operating properly,it displays an error message on its display indicatingwhat condition has occurred. In addition, one or moreof the alarm trip outputs can be set as a fault alarmwhich will trip when an unwanted diagnostic conditionoccurs.

Figure 7. When ordered with the Analog Output (-AO) option,the SPA2 is a combination alarm trip and signal transmitter.

ProgrammableInputmAV

RTDT/C

ohmsmV

ProgrammableAlarm Trips

IsolatedAnalogOutput

Any RangeBetween0-20mA0-10V


SPA2

Custom 128-Point Linearization CurvesThe ability to plot a custom linearization curve isbeneficial when non-linear input signals must beconverted to linear output representations (Figure 8).Typical applications include monitoring a non-lineartransducer, the level of odd-shaped tanks and flowmeter linearization.

Figure 8. Using the Intelligent PC Configuration Software, up to128 custom linearization points can be selected and saved in theSPA2’s memory to compensate for non-linear input signals.

8mA 12mA 16mA 20mA4mA

Input mA

0%

25%

50%

75%

100%

% D

isp

lay

FullScale

FullScale

(6mA, 35%)

(8mA, 50%)

(12mA, 70%)

(16mA, 87%)

(20mA, 100%)

Output = Function of the Input

CustomLinearizationPoints

Lower(Zero)Range

Full(High)Range

Ideal RTD Curve (Used By Default)

Actual Sensor Curve

100

98

1

0

˚C

Upper Trim Point #2

Lower TrimPoint #1

27

20

Captured20˚C-27˚C

Figure 9. The SPA2 can be set to measure the segment mostcritical to the process.

Trim to Specific Curve SegmentsThe SPA2 can be trimmed with two data points withinthe selected zero and span measurement range(Figure 9). This allows a complete process range tobe monitored while placing measurement emphasison a critical segment of the range. This providesincredible precision over a limited portion of the spanwhile measuring the remainder of the span withoutstanding accuracy.

Total Sensor Diagnostics for RTD InputsOur SPA2 Programmable Limit Alarm Trip (TPRGinput model) performs continuous sensor diagnostics(Figure 10). This industry-first and patented MooreIndustries feature saves you time and money byletting you know when a problem occurs, and its typeand location. If the RTD input breaks, the user candecide whether or not to trip one or more alarms toindicate trouble. A plain-English error message onthe display, as well as on the PC ConfigurationSoftware, indicates exactly which RTD wire hasbroken. Specific error messages eliminate the workof removing the sensor or checking all lead wires todiagnose a problem. If equipped with the AnalogOutput (-AO) option, the user has the option of drivingthe analog output either upscale or downscale onsensor failure.

Figure 10. Patented “Total Sensor Diagnostics” savestroubleshooting time by identifying which sensor wire has broken.

SPA


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2

WIRE 1BROKE

4-WireRTD

Alarm(s)Trip to Alertof SensorProblem

Analog OutputDrives Upscaleor Downscale(with -AO Option)

DisplayShows

Which RTDWire IsBroken

Broken RTDWire #1


SPA2

Specifications and information subject to change without notice.

Table 1. Long-Term Stability

Stability(% of Maximum

Span)

Input-to-Output(Years)

Input-to-Relay(Years)

1

0.081

0.093

3

0.14

0.16

5

0.18

0.21

1

0.047

0.066

3

0.81

0.114

5

0.105

0.147

Current Inputs

Voltage Inputs

Specifications (HLPRG: mA and V Input Model)Alarm Trip Repeatability:Current inputs, ±2microamps (0.01% of 20mAspan); Voltage inputs, ±1mV(0.01% of max. span)Display Accuracy: ±1 digit;when scaling the display (orin Custom Mode), high input-to-display span ratiosdecrease display accuracyInput Accuracy:Current inputs, ±2microamps (0.01% of 20mAspan); Voltage inputs, ±1mV(0.01% of max. span)Stability: Refer toTable 1Dead Band: 11.5V or50mA, maximum in LinearMode; equivalent ofmaximum input range inuser-set engineering units inScaling/Custom ModeResponse Time: 256msecmaximum (Defined as thetime from step change oninput to alarm state changewhen alarm is set to tripmid-point)Alarm Trip Delay:Programmable from0-120 secondsLine Voltage Effect:±0.002% of span for a1% change in line voltage(AC or DC)Isolation: 1000Vrmsbetween case, input, output(units with -AO option) andpower, continuous. Willwithstand a 1200Vacdielectric strength test forone minute (with nobreakdown)WITH -RF OPTION:500Vrms between case,input, output and powerPower Supply:24DC range, 18-30Vdc;UAC range, 90-260Vac;110DC range, 75-150VdcPower Consumption:3.5W max. (24DC supply);

Performance Performance(continued)

AmbientConditions(continued)

Adjustments

Weight

4W max. (UAC supply); 6Wmax. (110DC supply)Input Impedance: Currentinputs, 20ohms; Voltageinputs, 1MohmInput Over-RangeProtection: Voltage inputs,±30Vdc of max. input span;Current inputs, ±100mA ofmax. input span

WITH ANALOG OUTPUTOutput Accuracy: Current,±0.01% of max. span (±2microamps); Voltage,±0.01% of max. span(±1mV)Response Time:256msec maximum(128msec typical) for theoutput to change from 10%to 90% of its scale for aninput step change of 0 to100%Ripple (up to 120Hz):Current output, 10mVp-pwhen measured across a250ohm resistor; Voltageoutput, 50mVp-p max.Output Limiting:Current outputs,

Voltage output, -0.5-11VLoad Effect (currentoutputs): ±0.01% of spanfrom 0 to maximum loadresistance on current output

Operating Range:-40°C to +85°C(-40°F to +185°F)Relay Range:-25°C to +70°C(-13°F to +104°F)Storage Range:-40°C to +85°C(-40°F to +185°F)Ambient TemperatureEffect: Current, 2microamps/°C; Voltage,

1mV/°C; Output, ±0.009%of max. span/°CRelative Humidity:0-95% non-condensingRFI/EMI Protection:80-1000MHz, 1kHz AM,when tested to IEC61326with 0.5% of span or lesserrorWITH -RF OPTION:20V/m@80-1000MHz,1kHz AM, when tested toIEC61326 with 0.5% ofspan or less errorNoise Rejection:Common Mode,100dB@50/60HzNormal Mode,Current Input, 70dBtypical@50mAp-p@50/60Hz; Voltage Input,70dB typical@1Vp-p@50/60Hz

Front panel pushbuttonscontrol settings for zero,span, alarm trip points,high/low alarms, etc.;Internal jumper and menupassword protectparameter settings

LCD: 2x5 14-segmentcharacters, backlit,alphanumeric readoutaccurate to the nearestdigit.Range: -99999 to 99999;Decimal point can beuser-setLED Type: INPUT LED:Dual color LED indicatesinput failureREADY LED: Green LEDindicates unit is operatingproperlyALARM 1, 2, 3 and 4 LED:Dual color LED per relayindicates alarm status

544 g to 601 g(19.2 oz to 21.2 oz)

AmbientConditions

Indicators

Performancewith AnalogOutput (-AO

Option)

0-20mA 0, 23.6mA 4-20mA 3.6, 23.6mA X-20mA (90% of X), 23.6mA

Output Failure Limits


SPA2

Specifications (TPRG: RTD, T/C, Ohm, mV and Potentiometer Input Model)Alarm TripRepeatability: Refer toTable 2Display Accuracy:±1 digit; when scaling thedisplay (or in custommode), high input-to-display span ratiosdecrease displayaccuracyInput Accuracy:Refer to Table 2Reference JunctionCompensationAccuracy (T/C inputsonly): ±0.45°CStability: Refer toTable 3Dead Band: User setwithin selected inputrange; fully scaleable andset in user-selectedengineering unitsResponse Time:256msec maximum(Defined as the time fromstep change on input toalarm state change whenalarm is set to tripmid-point)Alarm Trip Delay:Programmable from0-120 secondsLine Voltage Effect:±0.002% of span for a1% change in line voltage(AC or DC)Isolation: 1000Vrmsbetween case, input,output (units with -AOoption) and power,continuous. Willwithstand a 1200Vacdielectric strength test forone minute (with nobreakdown)WITH -RF OPTION:500Vrms between case,input, output and powerPower Supply:24DC range, 18-30Vdc;UAC range, 90-260Vac;110DC range, 75-150Vdc

Performance Performance(continued)

AmbientConditions

(continued)

Adjustments

Weight

Power Consumption:3.5W max. (24DC supply);4W max. (UAC supply);6W max. (110DC supply)Input Over-RangeProtection: ±5VdcInput Impedance:T/C inputs, 40Mohms,nominalInput Over-RangeProtection: ±5VdcExcitation Current:(RTD and Ohms) 250microamps, ±10%

WITH ANALOG OUTPUT

Output Accuracy:Current, ±0.01% of max.span (±2 microamps);Voltage, ±0.01% of max.span (±1mV)Response Time:256msec maximum(128msec typical) for theoutput to change from10% to 90% of its scale foran input step change of 0to 100%Ripple (up to 120Hz):Current output, 10mVp-pwhen measured across a250ohm resistor; Voltageoutput, 50mVp-p max.Output Limiting:Current outputs,

Voltage output, -0.5-11VLoad Effect (currentoutputs): ±0.01% ofspan from 0 to maximumload resistance on currentoutput

Operating Range:-40°C to +85°C(-40°F to +185°F)Relay Range:-25°C to +70°C(-13°F to +104°F)Storage Range:-40°C to +85°C(-40°F to +185°F)

Ambient TemperatureEffect: Refer to Table 4Effect of AmbientTemperature onReference JunctionCompensation (T/Cinputs only): ±0.005%per °C change of ambienttemperatureRelative Humidity:0-95% non-condensingRFI/EMI Protection:80-1000MHz, 1kHz AM,when tested to IEC61326with 0.5% of span or lesserrorWITH -RF OPTION:20V/m@80-1000MHz,1kHz AM, when tested toIEC61326 with 0.5% ofspan or less errorNoise Rejection:Common Mode,100dB@50/60HzNormal Mode, refer toTable 5

Front panel pushbuttonscontrol settings for zero,span, alarm trip points,high/low alarms, etc.;Internal jumper and menupassword protectparameter settings

LCD: 2x5 14-segmentcharacters, backlit,alphanumeric readoutaccurate to the nearestdigit.Range: -99999 to 99999;Decimal point can beuser-setLED Type: INPUT LED:Dual color LED indicatesinput failureREADY LED: Green LEDindicates unit is operatingproperlyALARM 1, 2, 3 and 4 LED:Dual color LED per relayindicates alarm status

544 g to 601 g(19.2 oz to 21.2 oz)

AmbientConditions

Indicators

Performancewith AnalogOutput (-AO

Option)

0-20mA 0, 23.6mA 4-20mA 3.6, 23.6mA X-20mA (90% of X), 23.6mA

Output Failure Limits


SPA2

Table 2. Accuracy with RTD, Thermocouple, Ohms, and Millivolt Inputs (Models with TPRG Input)

Direct Resistance

Potentiometer

J

K

E

T

R

S

B

N

C

DC

Platinum

Nickel

Copper

100

200

300

400

500

1000

Dual 500

Dual 1000

Triple 500

Triple 1000

100200

400

500

1000Dual 500

Dual 1000

Triple 500

Triple 1000

100

120

9.035

0-4000

Dual 0-2000ohms

Triple 0-1300ohms4000 max.

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

-200 to 850°C(-328 to 1562°F)

-200 to 260°C(-328 to 500°F)

-200 to 440°C(-328 to 824°F)

-200 to 80°C(-328 to 176°F)

-100 to 650°C(-148 to 1202°F)

-100 to 260°C(-148 to 500°F)-100 to 440°C

(-148 to 824°F)-100 to 80°C

(-148 to 176°F)-200 to 510°C

(-328 to 950°F)-80 to 320°C

(-112 to 608°F)-50 to 250°C(-58 to 482°F)

0-4000ohms

0-2000ohms

0-1300ohms0-100%

-180 to 760°C(-292 to 1400°F)-150 to 1370°C

(-238 to 2498°F)-170 to 1000°C

(-274 to 1832°F)-170 to 400°C

(-274 to 752°F)0 to 1760°C

(32 to 3200°F)0 to 1760°C

(32 to 3200°F)

400 to 1820°C(752 to 3308°F)-130 to 1300°C

(-202 to 2372°F)0 to 2300°C

(32 to 4172°F)

n/a

-240 to 960°C(-400 to 1760°F)

-200 to 260°C(-328 to 500°F)

-200 to 440°C(-328 to 824°F)

-200 to 80°C(-328 to 176°F)

-150 to 720°C(-238 to 1328°F)

-100 to 260°C(-148 to 500°F)-100 to 440°C

(-148 to 824°F)-100 to 80°C

(-148 to 176°F)-240 to 580°C

(-400 to 1076°F)-100 to 360°C

(-148 to 680°F)

-65 to 280°C(-85 to 536°F)0-4095ohms

0-2000ohms

0-1300ohms0-100%

-210 to 770°C(-346 to 1418°F)-270 to 1390°C

(-454 to 2534°F)-270 to 1013°C

(-454 to 1855.4°F)-270 to 407°C

(-454 to 764.6°F)-50 to 1786°C

(-58 to 3246.8°F)-50 to 1786°C

(-58 to 3246.8°F)

200 to 1836°C(392 to 3336.8°F)

-270 to 1316°C(-454 to 2400.8°F)

0 to 2338°C(32 to 4240.4°F)

-50 to 1000mV

Input Type α α α α α Ohms ConformanceRange

MinimumSpan

Input Accuracy/ Repeatability

MaximumRange

10°C(18°F)

10ohms

10%35°C(63°F)40°C(72°F)35°C(63°F)35°C(63°F)50°C(90°F)50°C(90°F)

75°C(135°F)

45°C(81°F)100°C

(180°F)

4mV

Ohms

0.003850

0.003902

0.003916

0.00672

0.00427

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

±0.1°C(±0.18°F)

±0.85°C(±1.53°F)

±0.4ohms

±0.1%±0.25°C(±0.45°F)

±0.3°C(±0.54°F)

±0.2°C(±0.36°F)±0.25°C(±0.45°F)±0.55°C(±0.99°F)±0.55°C(±0.99°F)

±0.75°C(±1.35°F)

±0.4°C(±0.72°F)

±0.8°C(±1.44°F)

±30microvolts

T/C

RTD(2-, 3-,4-Wire)

Dual(2-Wire,

One 2-Wireand One3-Wire)

Triple(2-Wire)

mV


SPA2

Ordering Information

Unit Input Output Power Options Housing

SPA2ProgrammableLimit Alarm Trip

HLPRGPrograms to accept:

Current: Any rangebetween 0-50mAincluding:0-20mA4-20mA10-50mA

Voltage: Any rangebetween 0-10Vdcincluding:0-5Vdc1-5Vdc0-10Vdc

TPRG Programs toaccept (see Table 2for details):

RTD: 2-, 3- and4-wire; platinum,copper, and nickel

Thermocouple: J, K, E, T, R, S, N, C, B

Ohms:0-4000ohms(Potentiometer,4000ohms maximum)

Millivolts:–50 to +1000mV

24DC ±10%110DC ±10%UAC Acceptsany powerinput rangebetween90-260Vac

-AO Analogoutput (isolatedand linearized)scaleable for anyrange between0-20mA or 0-10V(see “Specifica-tions” foradditionalinformation)NOTE: Currentoutput can beuser-set forinternal orexternal power(source or sink)-DPDT Relaysare double-pole/double-throw(DPDT), 2 formC, rated5A@250Vac or24Vdc, 50/60Hz,non-inductive(2PRG outputmodel only)-RF EnhancedRFI/EMIprotection (see“Specifications”for details)

DIN UniversalDIN-stylehousing mountson 32mm(EN50035)G-type and35mm(EN50022) TopHat DIN-rails

When ordering, specify: Unit / Input / Output / Power / Options [Housing]Model number example: SPA2 / TPRG / 2PRG / 117AC / - AO -RF [DIN]

2PRG Dual Relays(Relays aresingle-pole/double-throw(SPDT, 1 form C, rated5A@250Vac or 24Vdc,50/60Hz, non-inductive)

4PRG Quad Relays(Relays aresingle-pole/double-throw(SPDT), 1 form C, rated5A@250Vac or 24Vdc,50/60Hz, non-inductive)

Each relay individuallyconfigures for:High or Low TripNormally Open orNormally ClosedFailsafe or Non-Failsafe

Table 5. Normal Mode Rejection Ratio

Sensor Type Max. p-p Voltage Injectionfor 100dB at 50/60Hz

150mV80mV

250mV1V

500mV100mV

1V250mV100mV

T/C: J, K, N, C, ET/C: T, R, S, B

Pt RTD: 100, 200, 300ohmsPt RTD: 400, 500, 1000ohms

Ni: 120ohmsCu: 9.03ohms

m V250-100062.5-250

31.25-62.5

Resistance1-4kohms

0.25-1kohms0.125-0.25kohms

Table 3. Long-Term Stability

Stability(% of Maximum

Span)

Input-to-Output(Years)

Input-to-Relay(Years)

1

0.09

0.08

3

0.16

0.14

5

0.21

0.18

1

0.047

0.008

3

0.81

0.114

5

0.104

0.147

RTD, Ohm & Pot Inputs

T/C & mV Inputs

Table 4. Ambient Temperature Effect

Accuracy per 1°C (1.8°F) Change in Ambient

RTD*

Millivolt

Ohm

0.0035°C

0.5 microvolts + 0.005% of reading

0.002ohms +0.005% of reading

0.00016°C + 0.005% of reading

0.0002°C + 0.005% of reading

0.00026°C + 0.005% of reading

0.0001°C + 0.005% of reading

0.00075°C + 0.005% of reading

0.0038°C + 0.005% of reading

0.003°C + 0.005% of reading

0.00043°C + 0.005% of reading

0.5 microvolts + 0.005% of reading

Thermocouple

Accuracy per 1°C (1.8°F) Change in Ambient

J

K

E

T

R, S

B

N

C

mV

*Accuracy of Ni672 is 0.002°C


SPA2

Figure 11. Installation Dimensions

Figure 12. Temperature Sensor Hook-Up Guide (Models with TPRG Input)

NOTE: While allSPA2 models (modelwith HLPRG inputshown) aredimensionallyidentical, the SPA2

that acceptstemperature inputs(TPRG input)features metalterminal blocksfor enhancedreference junctioncompensation.SPA


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2SITEPROGRAMMABLEALARM

CL

WHEN INSTALLED

WHEN INSTALLED

100mm(3.94 in)

52mm(2.05 in)

48mm(1.89 in)

138mm(5.43 in)

133mm(5.24 in)

126mm(4.97 in)

100mm(3.94 in)

137mm(5.39 in)

55mm(2.17 in)

+ –

1 43 2 1 43 2 1 43 2

Thermocouple and Millivolt

Input

2-Wire RTD or Decade

Resistance Box

1 43 2


Resistance Box


Resistance Box

1 43 2

Potentiometer Input

1 4 3 2

Dual 2-Wire Sensor

Measurement 1Measurement 2

One 2-Wire Sensor and One 3-Wire Sensor

Measurement 1Measurement 2

Three 2-Wire Sensors

Measurement 1

Measurement 2

1 4 3 2 1 4 3 2

Measurement 3


SPA2

Table 6. Terminal Designations (Models with TPRG Input)

Input Type

RTD, Ohm, Potentiometer,T/C & mV Inputs

Top Terminals (Left to Right)

T1 T2 T3 T4 T5 T6 T7 T8 T9 T10

KEY:AC or DC = Power InputACC or DCC = Power InputCM = Relay CommonDPDT = Double-Pole/Double-ThrowGND = Ground

NOTES:1. Terminal blocks can accommodate 14-22 AWG solidwiring.2. ±Io/±Vo labeling is present only when the unit is equippedwith the Analog Output (-AO) option.3. Your input power requirement (AC or DC / ACC or DCC)will depend upon your unit’s power need.

MR MR-Io Source+Io Sink +Vo -Vo

-Io Sink

Output Type

2PRG(SPDT Relays)

4PRG(SPDT Relays)

2 DPDT Relays

Middle Terminals (Left to Right)

11 12 13 14 15 16

NO3 CM3 NC3 NO4 CM4 NC4

Io = Current OutputMR = Manual ResetNO = Normally OpenNC = Normally Closed

Sink = Current SinkSource = Current SourceSPDT = Single-Pole/Double-ThrowVo = Voltage Output

+Io Source

Relay 2CM1

Relay 2NC1

Relay 2NO2

Relay 2CM2

Relay 2NC2

Output/Power Type

2PRG(SPDT Relays)

4PRG(SPDT Relays)

2 DPDT Relays

Bottom Terminals (Left to Right)

B1 B2 B3 B4 B5 B6 B7 B8 B9 B10

NotUsed

ACor

DC

ACCor

DCCGND

GND

N/A N/A N/A N/A N/A N/A

NO1 CM1 NC1 NO2 CM2 NC2Not

Used

Relay 2NO1

NotUsed

GNDRelay 1

CM1Relay 1

NC1Relay 1

NO2Relay 1

CM2Relay 1

NC2Relay 1

NO1

See Figure 12

NO1 CM1 NC1 NO2 CM2 NC2ACor

DC

ACor

DC

ACCor

DCC

ACCor

DCC

AccessoriesEach SPA2 order comes with one copy of our Intelli-gent PC Configuration Software (Windows® ‘95, ‘98,2000, NT and XP compatible) and a configurationcable. Use the chart below to order additional parts.

Part Number750-75E05-01

Part Number803-053-26

Intelligent PC Configuration Software(One copy provided free with each order)

Configuration Cable for use in connectingthe SPA2 to a PC (one cable provided freewith each order)


SPA2

Table 7. Terminal Designations (Models with HLPRG Input)

Input Type

Current Input

Voltage Input

Top Terminals (Left to Right)

T1 T2 T3 T4 T5 T6 T7 T8 T9 T10

KEY:AC/DC = Power InputACC/DCC = Power InputCM = Relay CommonCOM = Analog CommonDPDT = Double-Pole/Double-ThrowGND = Ground

NOTES:1. Terminal blocks can accommodate 14-22 AWGsolid wiring.2. ±Io/±Vo labeling is present only when the unit isequipped with the Analog Output (-AO) option.3. Your input power requirement (AC or DC / ACCor DCC) will depend upon your unit’s power need.

Tx +I COMNot

Used MR MR-Io Source+Io Sink +Vo

-Vo-Io Sink

MR-Io Source+Io Sink +VoMRTx COM

NotUsed +V

I = Current InputIo = Current OutputMR = Manual ResetNO = Normally OpenNC = Normally ClosedSink = Current Sink

Source = Current SourceSPDT = Single-Pole/Double-ThrowTX = Power for 2-wire transmitterV = Voltage InputVo = Voltage Output

-Vo-Io Sink

+Io Source

+Io Source

Output Type

2PRG(SPDT Relays)

4PRG(SPDT Relays)

2 DPDT Relays

Middle Terminals (Left to Right)

11 12 13 14 15 16

NO3 CM3 NC3 NO4 CM4 NC4

Relay 2CM1

Relay 2NC1

Relay 2NO2

Relay 2CM2

Relay 2NC2

Output/Power Type

2PRG(SPDT Relays)

4PRG(SPDT Relays)

2 DPDT Relays

Bottom Terminals (Left to Right)

B1 B2 B3 B4 B5 B6 B7 B8 B9 B10

NotUsed

ACor

DC

ACCor

DCCGND

GND

N/A N/A N/A N/A N/A N/A

NO1 CM1 NC1 NO2 CM2 NC2Not

Used

Relay 2NO1

NotUsed

GNDRelay 1

CM1Relay 1

NC1Relay 1

NO2Relay 1

CM2Relay 1

NC2Relay 1

NO1

NO1 CM1 NC1 NO2 CM2 NC2ACor

DC

ACor

DC

ACCor

DCC

ACCor

DCC


SPA2

Six Universal Instruments in One!Dual and QuadrupleLimit Alarm Trip

Analog or TemperatureTransmitter

Signal Isolator andConverter

Local Process Displayin Engineering Units

Linearizing, Averaging,Differential, andRate-of-Change Computation Module

2-Wire Transmitter Power Supply(Transmitter Excitation)

1

There’s no need to specify and stock an array ofsingle-function alarm trips. Our SPA2 is theperfect solution:

• Standardize on, and stock just one, universalinstrument for all of your alarm trip needs.

• Warn of trouble by providing an alarm outputwhen a process signal exceeds a high and/orlow limit.

• Provide dependable, redundant warningand/or shutdown capabilities to compensatefor a DCS or PLC failure.

• Use combination alarm trip/transmitter modelsto reduce costs when both alarming andmonitoring functions are needed at thesame location.

Universal Alarm Trip Solution• Sense dangerous conditions and shut down

control equipment before it is damaged.

• Compare two variables and trip an alarm whenthe difference between the two exceeds apreset value.

• Install multi-trip alarms to provide several levelsof warning and shutdown action.

• Use for reliable and cost-effective on/offcontrol of pumps and motors.

• Create custom, 128 point linearization curves tocompensate for non-linear measurements andinstruments.

• Keep track of sensor operation and quicklydiagnose sensor failures with our patentedTotal Sensor Diagnostics.

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4

5

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