Super Systems H2 Sensor - Manual (Page 8)

Hydrogen (H
2
) Sensor Operations Manual
Super Systems Inc. Page 8 of 17
Applies to Loop 1 (#1 and COMMON) Applies to Loop 2 (#2 and COMMON)
JP2 JP3 Resulting
Output
JP4 JP5 Resulting
Output
Open Open 4-20mA
(current)
Open Open 4-20mA
(current)
Closed Open 2-10 VDC Closed Open 2-10 VDC
Open Closed 4-20mA
(current)
Open Closed 4-20mA
(current)
Closed Closed 1-5 VDC Closed Closed 1-5 VDC
IMPORTANT: If Modbus register 43 is set to 0,
the above conditions are true. If Modbus register
43 is set to 1, the following changes take place
(depending on jumper settings):
• 4-20mA becomes 0-20mA
• 2-10 VDC becomes 0-10 VDC
• 1-5 VDC becomes 0-5 VDC.
IMPORTANT: If Modbus register 44 is set to 0,
the above conditions are true. If Modbus register
44 is set to 1, the following changes take place
(depending on jumper settings):
• 4-20mA becomes 0-20mA
• 2-10 VDC becomes 0-10 VDC
• 1-5 VDC becomes 0-5 VDC.
Table 1 - Analog Output Jumper Settings
Plumbing Connections
(Items “G” and “H” in Figure 2)
The sensor is provided with barb fittings (Items “G” and “H”) that are intended for use with 1/8”
ID flexible tubing. Flow goes into “G” and out through “H”. The barb fittings can be removed at
the user’s discretion, and any fitting with a 1/8” male pipe thread can be used in their place. If
the fittings are going to be replaced with different fittings, they must be replaced while the
stainless steel sensor block is still attached to the circuit board. Do not remove the sensor
block since its alignment with the sensors is a critical function that should only be performed by
a trained technician.
Analog Output Assignments
There are two analog outputs on the sensor. The default settings result in Output 1 being set
for Percent H2 (0-100%) and Output 2 being set for Percent Dissociation (0-100%). Both of
these outputs can be configured for any of the following parameters:
Percent Hydrogen (H
2
)
Percent Dissociation (DA)
Percent Ammonia (NH
3
)
Nitriding Potential (K
N
)
External
In “External” output mode, no calculation is performed, and the output is set to match a specific
value. Modifications to the Analog Output Assignments can be performed with the SSI H
2
Cell
Configuration Utility Software, which is described in the next section of this manual.