SDC-H1
Item name
Item code
Description/Option
SDC-H1-08-A3-1
40-30 0146
Transmitter for duct mounting: probe length 8cm (3”), incl. cable gland AMC-1
and humidity sensor element AES3-HT-A3
SDC-H1-16-A3-1
40-30 0147
Transmitter for duct mounting: probe length 16cm (6.2”), incl. cable gland
AMC-1 and humidity sensor element AES3-HT-A3
Item Name
Item Code
Humidity
Accuracy
[%RH]
Temperature
Accuracy [K]
@25°C (77°F)
Description/Option
AES3-HT-A2
40-50 0102
± 2%
±0.5°
Humidity - temperature sensor element
AES3-HT-A3
40-50 0103
± 3%
±0.4°
AES3-HT-A5
40-50 0104
± 5%
±0.3°
Item name
Item code
Description/Option
OPC-S
40-50 0029
Add-on display & 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
SDC-H1
Duct humidity transmitter
Features
Replaceable sensor element
Humidity measurement for air ducts
Minimum and maximum value memory
0…10 V, 0…20mA or 2…10V, 4…20mA 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 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
Humidity transmitter
A unique capacitive sensor element is used for measuring relative humidity. The applied measuring technology
guarantees excellent reliability and long term stability. The microprocessor samples the humidity once per second. It
calculates an averaging signal over a preset number of seconds and generates the output signal.
Standard output signal range and types may be selected by jumpers. Standard signal ranges are: 0…10VDC, 0…10VDC,
4…20mA and 0…20mA. 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 a display and programming accessory, 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 (item AMC-1)for cables 4 – 8 mm (AWG 6
– 1) is included. Contact your local sales contact to order sensing elements with different accuracies or if you prefer a
sensor with conduit connector or a built in display module.
Transmitter (default)
Sensor element (for replacement only)
Accessories
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SDC-H1
Power supply
Operating voltage
Transformer
24VAC 50/60 Hz 10%, 24VDC 10%
SELV to HD 384, Class II, 48VA max
Power consumption
Max 2 VA
Terminal connectors
For wire 0.34…2.5 mm2 (AWG 22…13)
Sensing probe
Humidity sensor
Range
Measuring accuracy
Hysteresis
Repeatability
Stability
Capacity sensor element
0…100%RH
See figure 1
1%
0.1%
< 0.5% / year
Signal outputs
Analog outputs
Output signal
Resolution
Maximum load
0…10VDCor 0…20mA
10 Bit, 9.7 mV, 0.019.5 mA
Voltage: ≥ 5 kΩ Current: ≤ 250Ω
Environment
Operation
Climatic conditions
Temperature
Humidity
To IEC 721-3-3
class 3K5
-40…70°C (-40…158°F)
<95% RH non-condensing
Transport &storage
Climatic conditions
Temperature
Humidity
Mechanical conditions
To IEC 721-3-2 and IEC 721-3-1
class 3K3 and class 1K3
-40…80°C (-40…176°F)
<95% RHnon-condensing
class 2M2
Standards
conformity
EMC directive
Low voltage directive
2004/108/EC
2006/95/EC
Product standards automatic electrical controls for
household and similar use
EN 60730–1
Electromagnetic compatibility for
domestic and industrial sector
Emissions: EN 60730-1
Immunity: EN 60730-1
Degree of protection to EN 60529
Mounted probe down with AMS-1
IP60
IP63
Safety class
III (IEC 60536)
General
Housing Materials Cover, back part
Filter material
PC+ABS (UL94 class V-0)
PTFE coated 1μm pores
Dimensions (H x W x D) Transmitter case
Probe
68 x 91 x 47mm (2.7” x 3.7” x 1.9”)
14 x 77/157 mm ( 0.55 x 3/6.2”)
Weight (incl. package) SDC-H1-08-A3-1
SDC-H1-16-A3-1
229g (8.1oz)
264g (9.3oz)
Figure 1: Max RH-tolerance at 25°C (77°F)
per sensor type
Relative humidity absolute accuracy
%RH
%RH
10
20
30
40
100
90 0 50
60
70
80
±1
±0
±2
±3
±4
±5
AES-HT-A2
AES-HT-A3
AES-HT-A5
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.
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SDC-H1
Parameter
Description
Range
Default
IP 00
H1: Show percent
ON, OFF
ON
IP 01
H1: Samples taken for averaging control signal
1…255
10
IP 02
H1: Calibration
-10…10%
0
Parameter
Description
Range
Default
OP 00
AO1: Humidity: Configuration of output signal:
0 = Feedback humidity input,
1 = Feedback humidity minimum value
2 = Feedback humidity maximum value
0…2
0
OP 01
AO1: Humidity: Minimum limitation of output signal
0…max%
0%
OP 02
AO1: Humidity: Maximum limitation of output signal
min…100%
100%
14 x 77 /157
(0.55 x 3 / 6.2)
47 (1.9)
91 (3.6)
68(2.7)
Dimensions mm(inch)
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
Output configuration
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SDC-H1
LEFT
key:
Exit from parameter menu
UP
key:
Display maximum values,
Press for more than 2 seconds resets
maximum value
DOWN
key:
Display minimum values,
Press for more than 2 seconds resets
minimum value
RIGHT
key:
Select transmitter, for transmitters
with more than one input.
Legend:
1: 4-digit display of current value,
minimum, maximum or control
parameter
2: Unit of displayed value, °C, °F, % or
none
3: Vertical display of output or input signal
with a resolution of 10%
4: 4-digit display of current value or control
parameter
Operation of the –OP type sensors
Standard display:
Single input transmitters: The current, minimum or maximum value is shown in the large digits. The small digits
indicate the active input (IN 1). The vertical bar on the right side indicates the actual output voltage or current in 10%
steps.
Indication and reset of minimum and maximum values
Activate the desired transmitter for dual transmitter by pressing the RIGHT key. Press UP to display maximum values,
press DOWN key to display minimum values.
Resetting minimum or maximum values: Pressing either UP or DOWN keys for longer than 3 seconds while the
minimum or maximum values are displayed.
Display and keys
Operation keys:
Configuration parameters
The SDC and SOC intelligent sensors can be adapted to fit perfect into your application. The preparation of the sensing
signal is defined by parameters.
The parameters are password protected. The parameters can be changed as follows:
1. Press UP and DOWN key simultaneously for three seconds. The display will indicate CODE.
2. Select a password using UP or DOWN keys. Dial 09 in order to get access to the configuration parameters. Press
the RIGHT key after selecting the correct password.
3. Once logged in, choose IP for input configuration or OP for output configuration using UP or DOWN. Press the
RIGHT key after selection.
4. The parameters are now displayed. The small digits show the parameter number, the large one its value.
5. Select the parameters with the UP/DOWN keys. Change a parameter by pressing the RIGHT key. The MIN and
MAX symbols show up and indicate that the parameter may be modified now. Use UP and DOWN key to adjust
the value.
6. After you are done, press RIGHT or LEFT key in order to return to the parameter selection level.
7. Press the LEFT key again so as to leave the menu. The unit will return to normal operation if no key is pressed for
more than 5 minutes.
8. The parameters and its values depend on the transmitter. Please use the respective datasheet for the list of
parameters.
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SDC-H1
Signal type
JP1
0…10 V
(1-2)
0…20 mA
(2-3)
Signal range
JP3
0…10 V, 0…20 mA
(1-2)
2…10 V, 4…20 mA
(2-3)
JP3 Signal range
U1: 0-10V
I1: 0…20mA
U1: 2-10 V
I1: 4…20mA
3
2
1
3
2
1
JP1 Signal type
U1
0-10V, 2-10V
I1
0…20mA, 4…20mA
3
2
1
3
2
1
OPA-S
JP1
JP3
1 2 3
G 24 V
G0 0 V
U1/ I1 AO H
STATUS
LED
OPC-S
Status LED
LED indicates status
No light: either no power or sensing element is
reversed.
5 sec blinking: Normal
2 sec blinking: OPA or OPC connected
1 sec blinking: Sensor element error
Output signal configuration
The analog output signal type may be configured with a jumper for
0…10VDC or 0…20 mA control signals. The jumpers are located next to the
terminal connector of each analog output. See table below for jumper
placement. The factory setting is to 0…10VDC.
The signal range may be set with JP3 for both analog outputs. JP3 will only
operate if the output range specified with OP01 and OP02 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 parameters applies.
Jumper settings
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