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Model 109SS Temperature Probe
1. General
The –L portion of this probe’s model number indicates the probe has a user-
specified lead length. For readability purposes, the probe will be referred to as
the 109SS throughout this document.
The 109SS consists of a thermistor encased in a stainless-steel sheath. The
rugged stainless-steel sheath protects the thermistor allowing the 109SS to be
buried or submerged in harsh, corrosive environments. It also has a fast time
response. This probe measures temperature from -40°C to +70°C. The
thermistor can survive temperatures up to 100°C, but the overmolded joint and
cable should not be exposed to temperatures greater than +70°C (see Figure
1-1).
Overmolded Joint
Thermistor Encased in
Stainless-Steel Sheath
Santo
p
rene-Jacketed Cable
FIGURE 1-1. 109SS Temperature Probe
The 109SS probe is typically used with the CR200-series, CR800, CR850,
CR1000, and CR3000 dataloggers which have a special instruction for
measuring it. The probe can also be measured with other Campbell Scientific
dataloggers using generic measurement instructions.
The 109SS ships with:
(1) Resource CD
1