Overview
Minco humidity and humidity plus temperature transmitters are designed using an advanced microprocessor. Digital signal processing allows these transmitters to precisely match the characteristics of the humidity sensor to a wide range of RH and temperature values found in the many applications the product serves.
The humidity sensor is comprised of an integrated circuit (IC) with a stable polymer element and platinum RTD that is used for temperature compensation. This sensor offers outstanding resistance to airborne contaminant and chemicals, and is protected by a sintered stainless steel filter which resists condensation.
- Wall/Duct/OSA mounting configurations
- Accuracies of 1% or 2% RH
- Temperature compensated
- Temperature output option
- Two-point field calibration
- NIST traceable calibrations
Applications
Building environmental control systems (HVAC), hospitals, food storage, warehouses, clean rooms, pharmaceutical, freezers, drying equipment, and emissions monitoring.
Specifications
Ambient Temperature:
Operating:
Room: -10 to 150ºF (-23 to 65ºC), non-condensing.
Wall/Duct/OSA: -10 to 185ºF (-23 to 85ºC), non-condensing.
Storage:
Room: -58 to 150ºF (-50 to 65ºC), non-condensing.
Wall/Duct/OSA: -58 to 185ºF (-50 to 85ºC), non-condensing.
Supply voltage: 9.5 to 35 VDC, non-polarized.
Voltage effect: ±001% of span/volt from 9.5 to 35 VDC.
Loop resistance: The maximum allowable resistance of the signal-carrying loop, including extension wires and load resistors, is given by this formula: Rloopmax = (Vsupply - 9.5)/0.02 AMPS. For example, if supply voltage is 24 VDC, the loop resistance must be less than 725 Ohm.
Adjustments: Zero and span field adjustments, non-interacting.
Time Constant: 50 seconds in slow moving air.
Connections: Screw terminals (22-14 AWG wire).
Weight:
Room: 0.19 lb (.084 kg).
Wall/Duct/OSA: 1.20 lb (0.55 kg).
Minimum output current: 3.5 mA
Maximum output current: 23 mA.
Humidity Transmitter AH429 and AH439
Output: 4-20 mA DC = 0% to 100% RH.
Sensing Element: Capacitive monolithic IC.
Accuracy: Includes temperature, linearity, hystersis, and repeatability.
±1% from 10% to 80% RH @ 25 to 35ºC or ±2% from 0% to 90% RH @ 25ºC
(±3% from 0% to 90% RH @ 15 to 50ºC)
(±5% from 0% to 90% RH @ 0 to 82ºC)
Time Constant: 50 seconds in slow moving air.
Specifications options for AH429 and AH439
| AH429 |
Model number:
AH429 Humidity Transmitter
|
| D |
Enclosure
D: Duct mount, 8" probe length
O: Outside Air/Wall mount, 4" probe length with shield, weather resistant enclosure
S: Space mount
W: Wall mount, 4" probe length, weather resistant enclosure |
| 1 |
Output
4 to 20 mA DC |
| N10 |
Calibration accuracy (humidity transmitter)
N10: ±1% from 10% to 80% (25 to 35ºC) with NIST certificate
N20: ±2% from 0% to 90% (25 to 35ºC) with NIST certificate
S20: ±2% from 0% to 90% (25 to 35ºC) |
| T1 |
Sensing element cover (ommited on "S" space mount models)
T0= Sintered stainless steel; pressed on cover
T1= Sintered stainless steel; screw on cover
T2= Slotted stainless steel; screw on cover (NA on "O" outside air models) |
| AH429D1N10T1 = Sample part number |
Temperature Transmitter AH439 only
Output: 4-20 mA DC over the specified temperature range.
Sensing element: 1000 Ohm platinum; 2 lead resistance thermometer, .00385 TCR.
Temperature: ±0.75% of span.
Calibration accuracy:
±.75% of Temptran span for 32 to 122ºF ambient.
±1.50% of Temptran span for -13 to 185ºF ambient.
Includes resistance thermometer tolerance, calibration accuracy, linearity, and ambient temperature effects.
Specification options for AH439 only
| AH439 |
Model number:
AH439 Dual Humidity and Temperature Transmitter |
| D |
Enclosure
D: Duct mount, 8" probe length
O: Outside Air/Wall mount, 4" probe length with shield, weather resistant enclosure
S: Space mount
W: Wall mount, 4" probe length, weather resistant enclosure |
| 1 |
Outputs
4 to 20 mA DC |
| N10 |
Calibration accuracy (humidity transmitter)
N10: ±1% from 10% to 80% (25 to 35ºC) with NIST certificate
N20: ±2% from 0% to 90% (25 to 35ºC) with NIST certificate
S20: ±2% from 0% to 90% (25 to 35ºC) |
| S |
Temperature transmitter range
EN: -20ºF to 140ºF
S: 0ºF to 100ºF
A: 20ºF to 120ºF
BI: 0ºF to 130ºF
KK: 30ºF to 180ºF
N: 32ºF to 122ºF
H: 40ºF to 90ºF
Consult factory for other possible ranges |
| T1 |
Sensing element cover (ommited on "S" space mount models)
T0= Sintered stainless steel; pressed on cover
T1= Sintered stainless steel; screw on cover
T2= Slotted stainless steel; screw on cover (NA on "O" outside air models) |
| AH439D1N10ST1 = Sample part number |
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