Thermistor Type Probes (Ring/Under Bolt, Ambient Air, Or Immersion Probe); Cable Extension; Figure 4 - Ring/Under Bolt, Ambient Air, Or Immersion Temperature Probe Connection Diagram - Maretron TMP100 User Manual

TMP100 User's Manual

2.4.2.2 Thermistor Type Probes (Ring/Under Bolt, Ambient Air, or Immersion Probe)

NOTE
You may connect TR3K ring/under bolt,TP-AAP-1 ambient air, and TP-IP-1
immersion probes only to the terminal pairs T2+/T2- (pins 5 and 6), T3+/T3-
(pins 7 and 8), T4+/T4- (pins 9 and 10), or T5+/T5- (pins 11 and 12).
Please refer to Figure 4 for connecting the TMP100 to a TR3K ring/under bolt thermistor
temperature probe, TP-AAP-1 ambient air temperature probe, or TP-IP-1 immersion
temperature probe. This figure shows the connection of the TP-IP-1 immersion probe to
channel 2 via the terminals named T2+ and T2-, the TR3K ring/under bolt probe to channel 3
via the terminals named T3+ and T3-, and the TP-AAP-1 ambient air probe to channel 4 via
the terminals named T4+ and T4-. Connection to channel 5 is similar.
1 2 3 4 5
Figure 4 – Ring/Under Bolt, Ambient Air, or Immersion Temperature Probe Connection

2.4.2.2.1 Cable Extension

If the cable on the thermistor type probe is not long enough to reach from the probe location
back to the terminals on the TMP100, you may extend the cable using ordinary two-conductor
cable with 22AWG or larger conductors. However, extending the cable will add resistance to
the circuit and can result in inaccurate temperature readings if this resistance is too high. For
example, in the worst case, which is measurement of an 80°C temperature, an additional 13Ω
of resistance will result in a -1°C temperature measurement error. To make your own
calculation, please refer to the Maretron Knowledge Base for details on the thermistor type
probe resistance versus temperature curves.
Page 6
6 7 8 9 10 11 12
TMP100 Screw Terminals
Diagram
TP-IP-1 Immersion Probe
TR3K Ring/Under
Bolt Probe
TP-AAP-1 Ambient Air Probe
Revision 1.2