Omega RH-REMOTE User guide

Download

Page 1

REMOTE PROBE HUMIDITY/ TEMPERATURE TRANSMITTER SERIES

Installation & Operation Instructions

Phone: 1-888-967-5224

Website: workaci.com

GENERAL INFORMATION

The A/TT Remote Probe Series sensors and transmitters are single point sensors that

FIGURE 1: ENCLOSURE DIMENSIONS

NEMA 4X (-4X)

output 4-20 mA with an optional voltage signal output of 1-5VDC or 2-10VDC signal. The sensor is designed for use with electronic controllers in commercial heating and cooling building management systems. All A/TT temperature transmitters can be

3.11"

(78.99 mm)

powered from either an unregulated or regulated 8.5-32 VDC power supply.

The A/RH Remote Probe Series sensor is a

3.70"

(93.98 mm)

relative humidity transmitter that can be powered with either an AC or DC supply voltage. The RH Remote Probe transmitter is eld selectable with a 4-20 mA, 0-5 VDC, or 0-10 VDC output signal that is equivalent to 0 to 100% RH. All RH units are shipped from the factory set to 4-20 mA output.

2.21”

(56.07mm)

3.70”

(93.98mm)

0.90”

(22.78mm)

(19.05mm)

(90.42mm)

0.75”

(23.11mm)

3.56”

0.91”

For optimal readings, follow these tips:

• Do not install on external walls.

• Avoid air registers, diusers, vents, and windows.

• Eliminate and seal all wall and conduit penetrations. Air migration from wall cavities may alter temperature readings.

• Do not install near heat sources. eg: lamps, radiators, direct sunlight, copiers, chimney walls, walls concealing

hot-water pipes.

MOUNTING INSTRUCTIONS

Remote Probe sensors may be mounted using a 3/4” mounting clip(not included) on walls or with cable ties. The sensor should be mounted in an area where air circulation is well mixed and not blocked by obstructions.

The RH Remote Probe includes a Black Rubber Cap that ts over the sensor lter. This cap should be placed on the sensor lter during wet/wash down processes. The cap must be removed for normal operation.

TRANSMITTER MOUNTING

Attach the base directly to the wall by rst drilling pilot holes for the mounting screws. Alternatively, you may refer to the dimensions listed in FIGURE 1 (top) to measure out.

SENSOR MOUNTING

To x the probe on a wall, ACI recommends a height of 48-60” (1.2-1.5 m) o the ground and at least 1.5’ (0.5 m) from the adjacent wall. Slide the sensor probe through the mounting clip(not included) - see FIGURE 2 (p. 2). Drill a screw through the socket and tighten to the wall. Refer to Wiring Instructions (p. 2-4) to make necessary connections.

Page 1

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com

Version: 7.0

I0000829

Page 2

WIRING INSTRUCTIONS

PRECAUTIONS

VAC

• RH Transmitter can be powered by VAC or VDC.

• Temperature transmitter is powered by 24 VDC only.

• Remove power before wiring. Never connect or disconnect wiring with power applied.

• Shielding - When using a shielded cable, ground the shield at the Transmitter ONLY. Do NOT ground the shield at the controller. Grounding both ends can cause a ground loop. The shield needs to be terminated into the Com terminal.

• It is recommended you use an isolated UL-listed class 2 transformer when powering the unit with 24 VAC. Failure to wire the devices with the correct polarity when sharing transformers may result in damage to any device powered by the shared transformer.

• If the 24 VDC or 24VAC power is shared with devices that have coils such as relays, solenoids, or other inductors, each coil must have an MOV, DC/AC Transorb, Transient Voltage Suppressor (ACI Part:

142583), or diode placed across the coil or inductor. The cathode, or banded side of the DC Transorb or diode, connects to the positive side of the power supply. Without these snubbers, coils produce very large voltage spikes when de-energizing that can cause malfunction or destruction of electronic circuits.

TEMPERATURE

The PG11 cord grip cap is shipped loosely tightened. Make sure that is loose when you open the cover. This is the cord grip that the remote sensor goes to.

FIGURE 2: MOUNTED ASSEMBLY

Minimum Wire Bend Radius

1.92” (48.77 mm)

Plastic cover MUST be used

for washdown applications.

REMOVE for normal operation.

3/4” MOUNTING CLIP NOT INCLUDED

SINTERED FILTER

FIGURE 3: PRINTED CIRCUIT

BOARDS

RH PCB

Open the cover of the enclosure. The temperature transmitter is located on the bottom of the enclosure. ACI recommends 16 to 26 AWG twisted pair wires or

TEMPERATURE TRANSMITTER BOARD

shielded cable for all transmitters.

FIGURE 4: SHARED POWER CONNECTIONS and ANALOG OUTPUTS

VOLTAGE OUTPUTS

VOUT COM

VIN

4-20mA

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com

RH VOUT OUTPUT

+24V DC

GND

VOUT

TEMPERATURE TRANSMITTER

VOUT OUTPUT

24V DC (-) COMMON & SHIELD CONNECTION

CURRENT OUTPUTS

VOUT COM

VIN

4-20mA

RH 4-20mA

OUTPUT

Page 2

CAN SHARE 24V DC

TEMPERATURE TRANSMITTER

4-20mA OUTPUT

SHIELD CONNECTION

Version: 7.0

I0000829

Page 3

+ -

Temp.Transmitter #1

Temp.Transmitter #N Temp.Transmitter #2

VDC

Controller

= Connections In1 = Controller Input #1 In2 = Controller Input #2 In3 = Controller Input #3

WIRING INSTRUCTIONS (Continued)

TEMPERATURE (Continued)

Twisted pair may be used for 2-wire current output transmitters or 3-wire for voltage output. Refer to FIGURE 5 (top) for wiring diagrams. All wiring must comply with local and National Electric Codes. All ACI TT and TTM temperature transmitters can be powered from either an unregulated or regulated 8.5 to 32VDC power supply. The TT and TTM DO NOT support an AC input. All TT and TTM temperature transmitters are reverse polarity protected. After wiring, attach the cover to the enclosure.

FIGURE 5: TEMPERATURE WIRING

STANDARD UNITS

CURRENT OUTPUT (4 to 20 mA)

ZERO

SPAN

RTD

4 to 20mA Output +VDC

VOLTAGE OUTPUT (1-5 or 2-10 VDC)

SPANZERO

The minimum voltage at the transmitter power terminal is 8.5V after load resistor voltage drop.

• 249 Ω load resistor (1-5 VDC output) =

13.5 V min supply voltage

• 499 Ω load resistor (2-10 VDC output) =

18.5 V min supply voltage

Note: All RTD’s are supplied with (2) or (3) ying lead

POTTED UNITS

CURRENT OUTPUT (4 to 20 mA)

wires. ACI’s transmitters are supplied with a 2 pole terminal block for RTD sensor connections. When wiring a 3 wire RTD, connect the (2) common wires (same color) together into the same terminal block - see FIGURE 4 (p.2).

+VDC (Red Wire)

4 to 20mA Output

TEMPERATURE - MULTIPLE CONNECTIONS

Several transmitters may be powered from the same

VOLTAGE OUTPUT (1-5 or 2-10 VDC)

supply as shown in FIGURE 6 (bottom). Each transmitter draws 25mA; refer to the following equation to obtain the number of permissible transmitters: [# Transmitters] = [Current] / (25 mA).

+VDC (Red Wire) GND (White Wire) Voltage Output

FIGURE 6: MULTIPLE TRANSMITTER CONNECTIONS

ower Supply

(White Wire)

(Yellow Wire)

GND

VOUT

Voltage Output (1-5, 2-10 VDC) GND +VDC

RTD

SPANZERO

RTD Wires

(100 Ohm RTD Brown Wires) (1K Ohm RTD Black Wires)

SPAN

ZERO

RTD Wires

(100 Ohm RTD Brown Wires) (1K Ohm RTD Black Wires)

Gnd In1 In2 In3

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562

Phone: 1-888-967-5224 | Website: workaci.com

Page 3

Version: 7.0

I0000829

Page 4

WIRING INSTRUCTIONS (Continued)

RELATIVE HUMIDITY WIRING INSTRUCTIONS

Open the cover of the enclosure. The RH transmitter is located on the inside of the cover. ACI recommends 16 to 26 AWG twisted pair wires or shielded cable for all transmitters. Twisted pair may be used for 2-wire current output transmitters or 3-wire for voltage output. Refer to

FIGURE 7 (top) for wiring diagrams.

RH OUTPUT SIGNALS

Switches 6, 7, and 8 are used to set the RH output signal. Refer to FIGURE 8 (bottom) for switch settings.

HUMIDITY REVERSE ACTING OUTPUT

The output is direct acting and can be changed to reverse acting mode. The output range stays the same but the corresponding RH value is opposite.

Example:

Direct Acting (DA)

0-10 V output mode, 0 V = 0% RH and 10 V = 100% RH

Reverse Acting (RA)

0-10 V output mode, 0 V = 100% and 10 V = 0%

To change the transmitter to reverse acting or back to direct acting, set switch 4 to ON to put the unit in setup mode. After switch 4 is on, turning switch 2 to ON will put the unit in direct/reverse acting mode. When switch 2 is set to ON, the output can be used to show if the unit is in direct or reverse acting mode. For direct acting, the output will be 1 V for 0-5 V, 2 V for 0-10 V, and 7.2 mA for 4-20 mA. For reverse acting the output will be 4 V for 0-5 V, 8 V for 0-10 V, and 16.8 mA for 4-20 mA.

FIGURE 7: RH OUTPUT SIGNALS

2 WIRE CURRENT OUTPUT SIGNAL

DC SUPPLY VOLTAGE

4-20 mA OUTPUT

4-20mA

3 WIRE CURRENT OUTPUT SIGNAL

SUPPLY GROUND / SIGNAL COMMON / SHIELD CONNECTION

AC or DC SUPPLY VOLTAGE

4-20 mA OUTPUT

4-20mA

VOLTAGE OUTPUT SIGNAL

0-10 or 0-5 VDC OUTPUT SIGNAL

SUPPLY GROUND / SIGNAL COMMON / SHIELD CONNECTION

AC or DC SUPPLY VOLTAGE

4-20mA

FIGURE 8: RH OUTPUT SWITCHES

4-20 mA Output

2 3

OFF

1 4 5 6

5 6 7

4 8

0-10 VDC Output

0-5 VDC Output

2 3

7 8

SHIELD CONNECTION

TB1

COMVIN VOUT

TB1

COMVIN VOUT

TB1

COMVIN VOUT

With switches 2 and 4 ON, each time switch 5 is set to ON the output will change to reverse acting or direct acting. To reset the unit to the default setting, toggle both switches 5 and 6 ON then OFF while both switches 2 and 4 are ON. When all calibration is completed, remember to place the switches back into the positions that correspond to the output needed as shown in FIGURE 8 (bottom).

RH CALIBRATION INSTRUCTIONS

Note: This is only a single point calibration. All transmitters are factory calibrated to meet/exceed

published specications. Field adjustment should not be necessary.

Page 4

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com

Version: 7.0

I0000829

Page 5

RH CALIBRATION INSTRUCTIONS (Continued)

The dipswitch allows the user to calibrate the sensor through the software. Setting switch 4 ON will put the transmitter into setup mode allowing the increment and decrement to work. Once in setup mode, the output will change to 50% (2.5 V for 0-5 V, 5 V for 0-10 V, 12 mA for 4-20 mA). Each increment or decrement step will cause the output to change by 0.1 V for 0-5 V, 0.2 V for 0-10 V, and 0.32 mA for 4-20 mA in setup mode. This can be used to show the user how far oset the transmitter is. To see the starting point again set switch 1 ON. This will show the 50% output again. When the unit is out of setup mode the output will go back to RH output. The maximum oset is 10%. There can be a total of 20 increments.

Increment RH Output

This will shift the RH output linearly up in 0.5% steps. Switch 4 must be set to ON rst. After switch 4 is on, each time switch 5 is set ON the RH output will increase by 0.5%. The increase goes into eect each time switch 5 is set to ON.

Decrement RH Output

This will shift the RH output linearly down in 0.5% steps. Switch 4 must be set to ON rst. After switch 4 is on, each time switch 6 is set ON the RH output will decrease by 0.5%. The decrease goes into eect each time switch 6 is set to ON.

Reset RH Output

This will reset the RH output back to the original calibration. Switch 4 must be set to ON rst. After switch 4 is on, toggle switches 5 and 6 ON then OFF. After 5 and 6 are OFF, slide switch 4 OFF. When all calibration is completed, remember to place the switches back into the positions that correspond to the output needed as shown in FIGURE 8 (p. 4).

RH TEST INSTRUCTIONS

Test mode will make the transmitter output a

FIGURE 9: RH SELECTION SWITCHES

xed 0%, 50%, or 100% value. The sensor will not aect the transmitter output. This is used for troubleshooting or testing only.

OFF

0% RH Output

2 3

5 6

OFF

50% RH Output

Switches 1, 2, and 3 are used for test mode. The output will be a xed 0%, 50%, or 100% signal that corresponds to the output selected with switches 6, 7, and 8. Refer to FIGURE 9 (right) for

100% RH Output

1 4 5 6

OFF

2 3

7 8

switch settings.

RH CONVERSION FORMULAS

Formula: Example:

4-20 mA

([mA signal] -4) / 0.16 = percent RH 12 mA output signal (12 - 4) / 0.16 = 50% RH

[VDC signal] / 0.05 = percent RH

1.25 vdc output signal

1.25 / 0.05 = 25% RH

0-5 VDC

0-10 VDC

[VDC signal] / 0.10 = percent RH

7.50 vdc output signal

7.50 / 0.10 = 75% RH

WARRANTY

The ACI Remote Probe Series RH sensors are covered by ACI’s Five (5) Year Limited Warranty, which is located in the front of ACI’S SENSORS & TRANSMITTERS CATALOG or can be found on ACI’s website: www.workaci.com.

Page 5

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com

Version: 7.0

I0000829

Page 6

PRODUCT SPECIFICATIONS

CABLE & ENCLOSURE

Minimum Cable Bend Radius: Cable Ratings | Cable Jacket Material: Cable Operating Temperature Range: Enclosure Specications: (Material, Flammability, Temp., NEMA/IP Ratings): Sensing Tube Material: Filter Material:

RH TRANSMITTER

RH Supply Voltage (Reverse Polarity Protected): RH Supply Current (VA): RH Output Load Resistance: RH Output Signal: RH Accuracy @ 77°F (25°C): RH Measurement Range: Operating RH Range: Operating Temperature Range: Storage Temperature Range: RH Stability | Repeatability | Sensitivity: RH Response Time (T63): RH Sensor Type: RH Transmitter Stabilization Time: RH Connections | Wire Size: RH Terminal Block Torque Rating: RH NIST Test Points:

TEMPERATURE TRANSMITTER

TT Supply Voltage: Supply Current: TT Maximum Load Resistance: TT Output Signals: TT Calibrated Accuracy | Linearity ¹: TT Temperature Drift ²: TTM100/TTM1K Certication Points: TT Warm Up Time: Warm Up Drift: Transmitter Operating Temperature/RH Range: Platinum RTD (PTC) Number Wires | Wire Colors: Platinum RTD Sensor Output @ 32°F (0°C): Platinum RTD Tolerance Class | Accuracy:

Platinum RTD Sensor Stability: Platinum RTD Response Time (63% Step Change):

Note : A Transmitter is calibrated at 71ºF (22ºC) Nominal | Note : Temperature Drift is referenced to 71ºF nominal calibration temperature

1.92” (48.77 mm) or 10x the Cable Diameter

UL (CMP, CL3P, FPLP); CSA(CMP, FT6), Plenum Rated | Polyvinyl Chloride (PVC) 32 to 167 °F (0 to 75 °C)

“-4X” Enclosure: ABS Plastic; UL94-V0; -40 to 140 °F (-40 to 60 °C)

304 Series Stainless Steel 304 Series Stainless Steel

4-20 mA: 250 Ω Load: 15 - 40 VDC / 18 - 28 VAC | 500  Load: 18 - 40 VDC / 18 - 28 VAC 0-5 VDC: 12 - 40 VDC / 18 - 28 VAC | 0-10 VDC: 18 - 40 VDC / 18 - 28 VAC Voltage Output: 8 mA maximum (0.32 VA) | Current Output: 24 mA maximum (0.83 VA) 4-20 mA: 700 Ω maximum | 0-5 VDC or 0-10 VDC: 4 KΩ Minimum 2-wire: 4 - 20 mA (Default) | 3-wire: 0-5 or 0-10 VDC & 4 - 20 mA (Field Selectable)

+/- 1% over 20% RH Range between 20 to 90% | +/- 2%, 3%, or 5% from 10 to 95% 0-100% 0 to 95% RH, non-condensing (Conformally Coated PCB’s)

-40 to 140 °F (-40 to 60 °C)

-40 to 149 °F (-40 to 65 °C) Less than 2% drift / 5 years | 0.5% RH | 0.1% RH 20 Seconds Typical Capacitive with Hydrophobic Filter 30 Minutes (Recommended time before doing accuracy verication) Screw Terminal Blocks (Polarity Sensitive) | 16 (1.31 mm²) to 26 AWG (0.129 mm²)

4.43 to 5.31 lb-in (0.5 to 0.6 Nm)

Default Test Points: 3 Points (20%, 50% & 80%) or 5 Points (20%, 35%, 50%, 65% & 80%) 1% NIST Test Points: 5 Points within selected 20% Range (ie. 30%-50% are 30, 35, 40, 45 & 50)

+8.5 to 32 VDC (Reverse Polarity Protected); 25 mA minimum



Load: +13.5 to 32 VDC | 500  Load: +18.5 to 32 VDC

250

(Terminal Voltage – 8.5 V ) | 0.020 A

2-Wire: 4-20 mA Current Output | 3-Wire: 1-5 VDC/2-10 VDC Voltage Output T. Spans < 500 °F (260 °C): +/- 0.2% | T. Spans > 500 °F (260 °C): +/- 0.5% T. Spans < 100 °F (38 °C): +/- 0.04%/°F | T. Spans > 100 °F (38 °C): +/- 0.02%/°F 3 Point NIST: 20, 50, 80% of span | 5 Point NIST: 20, 35, 50, 65, & 80% of span

10 Minutes | +/- 0.1%

-40 to 185 °F (-40 to 85 °C) 0 to 90% RH, non-condensing Two | TT100 & TTM100: Brown/Brown | TT1K & TTM1K: Black/Black A/TT100/TTM100 Series: 100 +/- 0.06% Class A | Tolerance Formula: +/- °C = (0.15 °C + (0.002 * |t|), where |t| is the absolute value of Temperature above or below 0°C in °C) +/-0.03% after 1000 Hours @ 572 °F (300 °C) 8 Seconds nominal

| A/TT1K/TTM1K Series: 1000

W.E.E.E. DIRECTIVE

At the end of their useful life the packaging and product should be disposed of via a suitable recycling centre. Do not dispose of with household waste. Do not burn.

Page 6

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com

Version: 7.0

I0000829

Page 7

TROUBLESHOOTING

HUMIDITY READING PROBLEM

No Reading

• Check that you have the correct supply voltage at the power terminal blocks.

• Check that wiring configurations and all DIP switch settings are as in FIGURE 7 and 8.

• Verify that the terminal screws are all connected tightly and that all of the wires are firmly in place.

Erratic readings

• Verify that all of the wires are terminated properly.

• Make sure that there is no condensation on the board.

• Check that the input power is clean. In areas of high RF interference or noise, shielded cable may be necessary to stabilize signal.

Inaccurate readings

• Verify proper mounting location to conrm no external factors (see mounting locations above).

• Check the output (voltage or current) against a highly accurate recently calibrated secondary reference. Measue RH at

the location of the sensor using the secondary reference, then calculate the RH percentage using the RH CONVERSION FORMULAS (p. 5). Compare the calculated output to reference.

• If the sensor is brand new, leave the sensor powered for at least 30 minutes to stabilize.

• If you suspect that the transmitter is not reading within the specied tolerance, please contact ACI for further assistance.

TEMPERATURE PROBLEM

No Reading

• No power to board - check voltage at power terminal - should be between +8.5 and 32 VDC.

Reading too Low

• RTD wires shorted. Disconnect wies from terminal block and check with ohmmeter. Reading should be close to 100 Ω or 1 KΩ.

• RTD Improper range of transmitter (too low). Check current or voltage - should be between 4-20 mA, 1-5 V, or 2-10 V.

Reading too High

• RTD opened. Disconnect sensor wires from terminal block and check with ohmmeter. Reading should be close to 100 Ω or 1 KΩ.

• Improper range of transmitter (too high). Check current or voltage - should be between 4-20 mA, 1-5 V, or 2-10 V.

Reading is Inaccurate

• Sensor check: Disconnect sensor wires from terminal block and check with ohmmeter. Compare the resistance reading

to the Temperature vs Resistance curves located on ACI’s website.

• Transmitter check: Make sure sensor wires are connected to terminal block. Determine that the proper output is being

transmitted based on predetermined span:

1. Go to ACI Website, Span to Output Page: http://www.workaci.com/content/span-output

2. Enter the low end of the span

3. Enter the high end of the span

4. Click on the output of the transmitter. This will generate a span to output chart.

5. Measure output of transmitter.

6. Compare measured output to calculated output

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562

Phone: 1-888-967-5224 | Website: workaci.com

Page 7

Version: 7.0

I0000829

Page 8

Automation Components, Inc.

2305 Pleasant View Road Middleton, WI 53562

Phone: 1-888-967-5224 Website: workaci.com

Page 8

Automation Components, Inc.

2305 Pleasant View Road | Middleton, WI 53562 Phone: 1-888-967-5224 | Website: workaci.com

Version: 7.0

I0000829