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H7625A, H7635A HUMIDITY/TEMPERATURE SENSORS
Output Settings (Table 1)
The board has three switch blocks:
— A six DIP switch block.
— A four DIP switch block.
— A white gang switch on a blue block.
1. Adjust the 4-switch block according to Table 1.
NOTE: The 6-switch block normally requires no
adjustment. (See the Appendix.)
2. Set the gang switch (white switch in blue block) to
correspond with the output (mA or Vdc).
NOTE: See Fig. 2 for DIP switch locations.
NORMAL
OPERATION
OFF
ON
WIRING
For voltage output, shielded cable (16-22 AWG) should
be used.
For current output, either shielded cable or twisted pair
(16-22 AWG) can be used.
IMPORTANT
When using shielded cable, ground the shield
only at the controller end (see Fig. 3). Grounding
both ends can cause a ground loop.
NOTE: See Table 2 for terminal designations.
Table 2. Terminal Designations.
Terminal
1
mA out
2
Vin (power)
3
GND (common)
4
Vdc (out)
5
20K NTC
6
20K NTC
62-0208—3
Fig. 2. DIP switch locations and settings.
Designation
Table 1. Controller Compatibility
and Output Settings.
Required
Sensor
Output
Controller
Setting
W7750, W7760,
4-20 mA — On — — 4-20 mA C7600C
W7761
W7750B,C
0-10 Vdc
W7760C,
(default)
W7753, W7760
T7350, XL50,
0-10 Vdc
XL100,
(default)
XL500 XF
Modules, XFL
Non-Honeywell 0-5 Vdc
mA OUTPUT
TRANSDUCER
ONLY
Vin
Io
Fig. 3. Typical wiring diagram for transducer with two-
wire mA output with external DC power supply.
2
4-Switch Block
Blue and
Settings
White
Output
4
3
2
1
Switch
On — — On Vout
On — — On Vout
On — On — Vout
OFF
0-10 VDC
ON
OFF
4-20 MA
ON
OFF
0-5 VDC
ON
M22659A
18 TO 36 Vdc
POWER SUPPLY
+
–
CONTROLLER, METER
OR RECORDER
+
INPUT SIGNAL
–
COMMON
GROUND
M22528
L
S
™
ON
PEC
Setting
H7621/31
n/a
n/a
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