Special Controller for Freeze Thawing Machine
(Asphalt Test / Ceramics Test / Cement Test)
CTM PID refrigeration temperature controller
Regulation & Setting
General parameters’ regulation
In measurement state: press SET (<4s)—PV display PRO and SV display value—press UP and DOWN key to correct the value—press SET to save it—repeat to press key, then return to the measurement/display state
The next parameter is set the same way as above
Special parameters’ regulation
In measurement state: press SET (<4s)—PV display ATU and SV display value—press SET continuously until PV display the parameter code you want—press UP and DOWN key to correct the value—press SET to save it—press SET(>4s), then return to the measurement/display state
The next parameter is set the same way as above
Password’s regulation(Default value, no need to correct)
In measurement state: press SET (<4s)—PV display ATU and SV display value—press SET continuously until PV display LCK and SV display 0—press UP and DOWN key to correct the value to 3—correct the code value—press SET to save it—press SET(>4s), then return to the measurement/display state
Code explanation and setting
1) General parameters
Code | Explanation | Ceramic brick | Cement Concrete |
PRO | Select program run period | 1-5 | 1-5 |
RET | Cycle-index | 100 | 15 |
P.S:
A:PR0=1,water inflow
PR0=2,high temperature preservation
PR0=3,pump water
PR0=4,refrigeration
PR0=5,low temperature preservation
B: RET is count down parameter. test times = set value - display value
2) Special parameters
Code | Explanation | Ceramic brick | Cement Concrete |
T1 | Water inflow time | 10 (min) | 5 (min) |
T2 | high temperature preservation time | 15 (min) | 120 (min) |
T3 | Water pump time | 18 (min) | 9 (min) |
T4 | Slope refrigeration | -0.33 (°C/min) | -19.9 (°C/min) |
T5 | low temperature preservation time | 15 (min) | 120 (min) |
SV1 | high temperature preservation point | -5°C | -20°C |
SV2 | Slope refrigeration initial point | 5°C | 0°C |
SV3 | Hot spot for lower limit of high temperature | 7°C | 18°C |
SV4 | Hot spot for low temperature | -6°C | -22°C |
P.S
Water inflow time and pump time can be determined by tester.
3) Code parameters
Code | Explanation | Ceramic brick | Cement Concrete |
AH2 | Refrigeration return D-value | 0.2 | 0.3 |
AH4 | Heating return D-value | 0.1 | 0.2 |
YT2 | Start time of compressor | 120s | 120s |