SDC-H1T1

SDC-H1T1
Duct Humidity and Temperature Transmitter
Features
 Replaceable sensor element
 Humidity and temperature measurement for air ducts
 Minimum and maximum value memory
 0…10 V, 0…20 mA or 2…10 V, 4…20 mA measuring
signals selectable with jumpers
 Optional alternative signal ranges programmable
 Selectable averaging signal
 Optional LCD display (OPC-S) or external display
(OPA-S)
 Status LED
Applications
 Humidity and temperature measurement for supply
and return air ducts in heating, ventilation and air
conditioning applications.
 Recording of minimum and maximum values for
critical environments
 Supervision of critical humidity and temperatures
Humidity and temperature transmitter
A unique capacitive sensor element is used for measuring relative humidity while temperature is measured by a band-
gap sensor. The applied measuring technology guarantees excellent reliability and long term stability. The
microprocessor samples the humidity and temperature once per second. It calculates an averaging signal over a preset
number of seconds and generates the output signal based on lower and upper signal range values. Standard range is
0…100% RH, -40…60 °C (-40…140 °F) and 10 seconds average. The signal range of the temperature measurement
and the averaging samples may be customized.
Standard output signal range and types may be selected by jumpers. Standard signal ranges are: 0…10 VDC, 0…10
VDC, 4…20 mA and 0…20 mA. Other ranges can be defined by using a programming tool (OPA-S or OPC-S). A version
with display is possible by ordering the integrated display accessory OPC-S.
Minimum and maximum values
Using the programming tool, the user has the option to read out and reset minimum and maximum values. The
minimum and maximum values may as well be used as output signals. The minimum and maximum values are saved
into the EEPROM and are available after a power interruption.

Ordering
Per default a sensor element with 3% RH accuracy and a PG9 cable gland for cables  4 – 8 mm (AWG 6 – 1) (item
name AMC-1) is included. Contact your local sales contact to order different probe length, sensing elements with
different accuracies or if you prefer a sensor with conduit connectors or a built in display module.
Signal converter
Item Name Item Code Description/Option
SDC-H1T1-08-A3-1 40-30 0150 Signal converter for duct mounting: probe length 8 cm (3”), incl. cable gland
AMC-1 and a sensor AES3-HT-A3
SDC-H1T1-16-A3-1 40-30 0151 Signal converter for duct mounting: probe length 16 cm (6.2”), incl. cable
gland AMC-1 and a sensor AES3-HT-A3
SDC-H1T1-24-A3-1 40-30 XXXX Signal converter for duct mounting: probe length 24 cm (9.4”), incl. cable
gland AMC-1 and a sensor AES3-HT-A3
SDC-H1T1-x-A3-1-W0 40-30 0xxx-0 0 Temperature Range: -40…60°C (-40…140°F) (default)
SDC-H1T1-x-A3-1-W1 40-30 0xxx-1 1 Temperature Range: -35...35°C (-31…95°F)
SDC-H1T1-x-A3-1-W2 40-30 0xxx-2 2 Temperature Range: 0…50°C (32…122°F)
SDC-H1T1-x-A3-1-W3 40-30 0xxx-3 3 Temperature Range: Special – Specify in order
Sensor element (for replacement only)
Item Name Item Code Humidity Temperature Description/Option
Accuracy Accuracy [K]
[%RH] @25 °C (77 °F)
AES3-HT-A2 40-50 0102 ± 2% ± 0.3°
AES3-HT-A3 40-50 0103 ± 3% ± 0.4° Humidity - temperature sensor element
AES3-HT-A5 40-50 0104 ± 5% ± 0.5°
Accessories
Item Name Item Code Description/Option
OPC-S 40-50 0029 Built in display and programming module
OPA-S 40-50 0006 External display module
AMS-1 20-10 0116 Weather shield to protect the sensor element
AMC-2 40-50 0074 Conduit connector NPT 1/2

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Technical specification
Warning! Safety advice! This device is intended to be used for comfort applications. Where a device failure
endangers human life and/or property, it is the responsibility of the owner, designer and installer to add additional
safety devices to prevent or detect a system failure caused by such a device failure. The manufacturer of this device
cannot be held liable for any damage caused by such a failure. Failure to follow specifications and local regulations
may endanger life, cause equipment damage and void warranty.
Power supply Operating voltage 24 V AC 50/60 Hz  10%, 24 VDC  10%
Transformer SELV to HD 384, Class II, 48 VA max.
Power consumption Max. 2 VA
Terminal connectors For wire 0.34…2.5 mm2 (AWG 24…12)
Sensing probe Humidity sensor Capacity sensor element
Range 0…100% RH
Measuring accuracy See Figure 1
Hysteresis  1%
Repeatability  0.1%
Stability < 0.5% / year
Temperature sensor Bandgap sensor
Range -40…70 °C (-40…158 °F)
Measuring accuracy See Figure 2
Repeatability  0.1 °C,  0.2 °F
Signal outputs Analog outputs
Output signal DC 0-10 V or 0…20 mA
Resolution 10 Bit, 9.7 mV, 0.019.5 mA
Maximum load Voltage: ≥1kΩ Current: ≤250Ω
Environment Operation To IEC 721-3-3
Climatic conditions class 3 K5
Temperature -40…70 °C (-40…158 °F)
Humidity <95% R.H. non-condensing
Transport & storage To IEC 721-3-2 and IEC 721-3-1
Climatic conditions class 3 K3 and class 1 K3
Temperature -40…80 °C (-40…176 °F)
Humidity <95% R.H. non-condensing
Mechanical conditions class 2M2
Standards conformity
EMC directive 2014/30/EU
Low voltage directive 2014/35/EU
Product standards automatic electrical controls for
EN 60 730 –1
household and similar use
Electromagnetic compatibility for Emissions: EN 60 730-1
domestic and industrial sector Immunity: EN 60 730-1
Degree of protection to EN 60529 IP60
Mounted probe down with AMS-1 IP63
Safety class III (IEC 60536)
General Housing materials Cover, back part PC+ABS (UL94 class V-0)
Filter material PTFE coated 1μm pores
RoHS compliant according to 2011/65/EU
Dimensions (H x W x D) Transmitter case 68 x 91 x 47 mm (2.7” x 3.7” x 1.9”)
Probe  14 x 77/157 mm ( 0.55 x 3/6.2”)
Weight (incl. package) SDC-H1T1-08-A3-1 227g (7.9 oz)
SDC-H1T1-16-A3-1 262g (9.2 oz)

Relative humidity accuracy Temperature accuracy

°K
%RH
AES3-HT-A5 ±2.0 AES3-HT-A5
±5
AES3-HT-A3
±4 ±1.5
AES3-HT-A3 AES3-HT-A2
±3 ±1.0
±2
AES3-HT-A2 ±0.5
±1
±0 ±0
0 10 20 30 40 50 60 70 80 90 10 %RH -40 -20 0 20 40 60 80 100 120 °C
Figure 1: Max RH-tolerance at 25°C (77°F)
0
per sensor type
-40 -4 32 68 104 140 176 212 248 °F
Figure 2: Max T-tolerance by sensor type

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Dimensions mm(inch)

14 x 77 /157 47 (1.9) 91 (3.6)

(0.55 x 3 / 6.2)

68(2.7)
Installation and storage

Mounting location
The transmitter should be installed on the duct in an area where the air stream is well mixed:
 Locate a supply air sensor two or three meters downstream from the nearest fan and coil.
 Mount the return air sensor close to the air inlet but downstream from a return fan if one is present.

Mounting instruction / replacing the sensor element

See installation sheet no. 70-000525 (www.vectorcontrols.com).

Warning about storage, packaging and usage environment

The sensing part is a polymer, which measures the humidity in the ambient air. For proper sensor operation some
mandatory precautions need to be taken during storage, packaging and usage.
The transmitter and its sensing element should not be packaged, stored or used in out-gassing plastic materials, which
could cause sensor contamination. In particular, it is recommended not to use any glue or adhesive tapes (Sellotape,
Scotch-Tape, Tesa-Film, etc.) within the package or close proximity of the sensor. Foamed materials often cause
contamination problems and should not be used to package the transmitter. Best packaging material is a simple
cardboard box or a deep-drawn plastic case in a cardboard box.

Configuration
The transmitter can be adapted to fit perfectly into any application by adjusting the software parameters. The
parameters are set with the operation terminals OPA-S or OPC-S. The OPA-S may also be used as remote indicator.
Input configuration
Parameter Description Range Default
IP 00 TI1: Celsius or Fahrenheit, C = OFF, F = ON ON, OFF OFF
IP 01 TI1: Samples taken for averaging control signal 1…255 10
IP 02 TI1: Calibration -10…10 0
IP 03 TI1: Minimum temperature -40…215 °C/F 0 °C
IP 04 TI1: Maximum temperature -40…215 °C/F 50°C
IP 05 H1: Show Percent ON, OFF ON
IP 06 H1: Samples taken for averaging control signal 1…255 10
IP 07 H1: Calibration -10…10% 0
Output configuration
Parameter Description Range Default
OP 00 AO1: Humidity: Configuration of output signal: 0–2 0
0 = Feedback humidity input,
1 = Feedback humidity minimum value
2 = Feedback humidity maximum value
OP 01 AO1: Humidity: Minimum limitation of output signal 0 – Max % 0%
OP 02 AO1: Humidity: Maximum limitation of output signal Min – 100% 100%
OP 03 AO2: Temperature: Configuration of output signal: 0–2 0
0 = Feedback temperature input,
1 = Feedback temperature minimum value
2 = Feedback temperature maximum value
OP 04 AO2: Temperature: Minimum limitation of output signal 0 – Max % 0%
OP 05 AO2: Temperature: Maximum limitation of output signal Min – 100% 100%

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Output signal configuration

The analog output signal type may be configured with a jumper for 0-10 Signal Type JP1, JP2
VDC or 0-20 mA control signals. The jumpers are located next to the 0 – 10 V (1-2)
terminal connector of each analog output. See table below for jumper
0 – 20 mA (2-3)
placement. The factory setting is to 0-10 VDC.

The signal range may be set with JP3 for both analog outputs. JP3 will only Signal Range JP3
operate if the output range specified with OP01 and OP02 or OP04 and
0 – 10 V, 0 – 20 mA (1-2)
OP05 is left at the default position of 0…100%. With any other setting the
position of JP3 has no influence and the range defined with the output 2 – 10 V, 4 – 20 mA (2-3)
parameters applies.
Jumper Settings

JP1, JP2 Signal type JP3 Signal range

3 U1 / U2 3 U1, U2: 0-10V
2 2
1
0-10V, 2-10V 1 I1, I2: 0-20mA

3 I1 / I2 3 U1, U2: 2-10V

2 2
1 0-20mA, 4-20mA 1 I1, I2: 4-20mA

JP1 JP2 JP3

Status LED

1 2 3 4 LED indicates status

No light: either no power or sensing element is
STATUS

reversed.
LED

5 sec blinking: Normal

OPA-S
2 sec blinking: OPA or OPC connected
U1/ I1 AO H

U2/ I2 AO T
24V

1 sec blinking: Sensor element error

0V
G0
G

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