H7625A, H7635A HUMIDITY/TEMPERATURE SENSORS
62-0208—3
2
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.
Table 1. Controller Compatibility
and Output Settings.
Fig. 2. DIP switch locations and settings.
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.
Fig. 3. Typical wiring diagram for transducer with two-
wire mA output with external DC power supply.
Controller
Required
Sensor
Output
Setting
4-Switch Block
Settings
Blue and
White
Output
Switch
L
ON
S
PEC
™
Setting
4 3 2 1
W7750, W7760,
W7761
4-20 mA — On — — 4-20 mA C7600C
W7750B,C
W7760C,
W7753, W7760
0-10 Vdc
(default)
On — — On Vout
H7621/31
T7350, XL50,
XL100,
XL500 XF
Modules, XFL
0-10 Vdc
(default)
On — — On Vout
n/a
Non-Honeywell 0-5 Vdc
On — On — Vout
n/a
M22659A
NORMAL
OPERATION
OFF ON
OFF
ON
0-10 VDC
OFF
ON
4-20 MA
0-5 VDC
OFF
ON
Terminal
Designation
1
mA out
2
Vin (power)
3
GND (common)
4
Vdc (out)
5
20K NTC
6
20K NTC
mA OUTPUT
TRANSDUCER
ONLY
18 TO 36 Vdc
POWER SUPPLY
CONTROLLER, METER
OR RECORDER
INPUT SIGNAL
COMMON
Vin
+
+
Io
–
–
M22528
GROUND
