This product is covered by ACI's Five (5) Year Limited Warranty. Learn more
Product overview
Relative Humidity, RH Outputs: 0-5, 0-10 VDC & 4-20mA (Default), Room (R), ± 2% Accuracy (NIST Cert), Transmitter w/ 1,000 Ohm RTD (NIST Cert), 4-20mA (Temp Output)
Application
- Humidification
- Dehumidification
- Monitoring Indoor Space Humidity
- Hospitals
- Process Control
- Laboratories
- Museums
- Schools
- Office Buildings
- Data Centers
- ESD (Anti-Static) Control
Product specifications
RH Supply Voltage:
4-20 mA: 250 Ohm Load: 15 - 40 VDC / 18 - 28 VAC | 500 Ohm 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
Note: Reverse Polarity Protected
RH Supply Current (VA):
Voltage Output: 8 mA maximum (0.32 VA)
Current Output: 24 mA maximum (0.83 VA)
RH Output Load Resistance:
4-20 mA: 700 Ohms maximum
0-5 VDC or 0-10 VDC: 4K Ohms Minimum
RH Output Signal:
2-wire: 4 - 20 mA (Factory Default)
3-wire: 0-5 or 0-10 VDC and 4 - 20 mA (Field Selectable)
RH Accuracy @ 77°F (25°C):
Model Dependent: +/- 1% over 20% RH Range between 20 to 90% | +/- 2%, or 3% from 10 to 95%
RH Measurement Range:
0-100%
Operating RH Range:
0 to 95% RH, non-condensing
RH Operating Temperature Range:
-40 to 140°F (-40 to 60°C)
Storage Temperature Range:
-40 to 149°F (-40 to 65°C)
RH Stability | Repeatability | Sensitivity:
Less than 2% drift / 5 years | 0.5% RH | 0.1% RH
RH Response Time (T63):
20 Seconds Typical
RH Sensor Type:
Capacitive with Hydrophobic Filter
RH Transmitter Stabilization Time:
30 Minutes (Recommended time before doing accuracy verification)
Connections | Wire Size:
Screw Terminal Blocks (Polarity Sensitive) | 16 (1.31 mm²) to 26 AWG (0.129 mm²)
Terminal Block Torque Rating:
4.43 to 5.31 lb-in (0.5 to 0.6 Nm)
RH NIST Test Points:
Default Test Points: 3 Points (20%, 50% & 80%)
1% NIST Test Points: 5 Points within selected 20% Range (ie. 30%-50% are 30, 35, 40, 45 & 50)
TT Supply Voltage | Supply Current:
+8.5 to 32 VDC (Reverse Polarity Protected) | 25 mA minimum
250 Ohm Load: +13.5 to 32 VDC | 500 Ohm Load: +18.5 to 32 VDC
TT Maximum Load Resistance:
(Terminal Voltage – 8.5 V) | 0.020 A
TT Output Signals:
Current Output: 4-20 mA (2-Wire Loop Powered)
Model Dependent: Voltage Output: 1-5 VDC/2-10 VDC (3-Wire)
TT Calibrated Accuracy | Linearity:
Temperature Spans < 500°F (260°C): +/- 0.2% | Temp Spans > 500°F (260°C): +/- 0.5%
TT Temperature Drift:
Temperature Spans < 100°F (38°C): +/- 0.04%/°F | Temp Spans > 100°F (38°C): +/- 0.02%/°F
TTM100/TTM1K NIST Certification Points:
3 Point NIST: 20%, 50%, 80% of span
5 Point NIST: 20%, 35%, 50%, 65%, 80% of span
TT Warm Up Time | Warm Up Drift:
10 Minutes | +/- 0.1%
Transmitter Operating Temperature Range:
-40 to 185°F (-40 to 85°C)
Platinum RTD (PTC) | Number Wires (Wire Colors):
Two | A/TT100/TTM100 Series: Brown/Brown | A/TT1K/TTM1K Series: Black/Black
Platinum RTD Output @ 32°F (0°C):
A/TT100/TTM100 Series: 100 Ohms Nominal
A/TT1K/TTM1K Series: 1000 Ohms Nominal
Platinum RTD Tolerance Class:
+/- 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)
Platinum RTD Stability:
+/-0.03% after 1000 Hours @ 572°F (300°C)
Platinum RTD Response Time (63% Step Change):
8 Seconds nominal
Enclosure Material | Color:
“-R2” Enclosure: ABS (White)
“-R” Enclosure: ABS (Beige)
Enclosure Flammability Rating:
UL94-HB
Product Dimensions:
“-R2” Enclosure: 4.50” (114.3 mm) x 2.75” (69.85 mm) x 1.12” (28.45 mm)
“-R” Enclosure: 4.50” (114.3 mm) x 2.75” (69.85 mm) x 1.12” (28.45 mm)
Product Weight:
A/RHx-TT-R2 Series: 0.21 lbs. (0.096 kg)
A/RHx-TT-R Series: 0.21 lbs. (0.096 kg)
Agency Approvals:
RoHS, WEEE
