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Temperature Input Units Section 6-4
Performance Specifications
GRT1-TS2P/TS2PK
Note For the GRT1-TS2P, a current of 0.35 mA flows to the platinum re-
sistance thermometer. For the GRT1-TS2PK, a current of
0.035 mA flows to the platinum resistance thermometer.
Note A 2-wire connection has a strong affect on the conductor resistance. When
using a 2-wire connection, the conductor resistance R directly determines the
error.
GRT1-TS2P: The error will be 4°C/Ω for each line. For example, when using a
conductor with a resistance R of 1 Ω, the total conductor resistance would be
1 Ω × 2 = 2 Ω. Therefore, an error of 4°C/Ω × 2 Ω = 8.0°C would occur.
GRT1-TS2PK: The error will be 0.4°C/Ω for each line. For example, when
using a conductor with a resistance R of 1 Ω, the total conductor resistance
would be 1 Ω × 2 = 2 Ω. Therefore, an error of 0.4°C/Ω × 2 Ω = 0.8°C would
occur.
Item Specifications
Model GRT1-TS2P GRT1-TS2PK
Input Platinum resistance thermometer
Number of I/O points 2 inputs (Two input words are allocated in the Master
when normal display mode is selected or 4 input
words are allocated when 1/100 display mode is
selected.)
Input type
PT100 (
−200 to 850°C) or
PT100 (−200 to 200°C);
switching possible.
Using Setting Tool: Can
be set separately for each
input.
Using DIP switch: Both
inputs are set together.
PT1000 (
−200 to 850°C)
or PT1000 (−200 to
200°C); switching possi-
ble.
Using Setting Tool: Can
be set separately for each
input.
Using DIP switch: Both
inputs are set together.
Indication accuracy
−200 to 850°C input range:
(±0.3% of indication value or ±0.8
°C, whichever is
larger) ±1 digit max.
−200 to 200°C input range:
(±0.3% of indication value or ±0.5°C, whichever is
larger) ±1 digit max.
Conversion cycle 250 ms/2 points
Temperature conversion data Binary data two's complement (4-digit hexadecimal
when normal display mode is selected or 8-digit hexa-
decimal when 1/100 display mode is selected)
Isolation method Between input and communications lines: Photocou-
pler isolation
Between temperature input signals: Photocoupler iso-
lation
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