Instructions for Orion INSTRUMENTS models including: MT Series, MT Series Industrial Temperature Switches, Industrial Temperature Switches, Temperature Switches, Switches
MT Series
MD/MT TEMPERATURE SWITCHES MT INSTALLATION DRAWING 98 (3.85) Mounting Holes 2 Nos. Ø7.0 149 (5.86) 130 (5.11) 118 (4.64) 31 (1.22) 51 (2.0) 87 (3.42) 31 (1.22) 48 (1.88) Cable Entry 1/2"NPT or M20x1.5 SS Capillary 2Mtr. Long (Options Available) Bulb Diameter Ø9.5 (0.37) 100 (3.94) Mounting Nut 3/8"BSP (Option Available) 129 APPROX. DIMENSIONS IN mm inches 57 Bulletin No. KA220802 MD/MT TEMPERATURE SWITCHES RANGE SELECTION TABLE Range Code T1H Range oC ( oF) 25 - 90 (77 - 194) Differential* oC ( oF) Approximate Maximum for "A1" microswitch 15 (59) Maximum Working Temperature oC ( oF) 150 (302) T2H 70 - 150 (158 - 302) 20 (68) 200 (392) T3H 120 - 215 (248 - 419) 30 (86) 300 (572) Note: 1. The minimum differential increases with the setpoint. The differential values mentioned in the above table are approximate maximum for FSR. The differential value will vary according to the pressure range selected and microswitch type. For actual values of differential please contact sales office. 2. When using 2SPDT switching arrangement, both microswitches may not actuate and/or deactuate at the same point. A small stage gap, normally upto +/- 5% FSR (depending on range code) may be observed. The On-Off differential (hysterisis) typically tends to be atleast double of those published for 1SPDT pressure switches. If actuation and/or deactuation at same point is critical part of operation, then it can be achieved by using a separate DPDT relay. This relay will need a separate power supply for it's coil. 75Bulletin No. KA220802 130 HOW TO ORDER INDUSTRIAL TEMPERATURE SWITCHES TEMPERATURE MD/MT SWITCHES 131 Group 1 Non standard allocation Group 2 Gas Group Classification Group 3 Cable Entry Size Group 4 Switch Type Group 5 Range Code (values in oC) Group 6 Microswitch Type Group 7 Temp. Bulb Material / Size Group 8 Capillary Material / Size Reserved for MD = Non-standard Industrial Options not temperature covered in switch with IP66 Catalogue. Will rated enclosure Be given by as per IS/IEC Manufacturer, 60529 Only after Agreement of Supply details With customer. MT = Industrial temperature switch with IP66 rated enclosure as per IS/IEC 60529 1 = Al. enclosure ½" NPT threads *2 = Al. enclosure ¾" NPT threads 3 = Al. enclosure M20 X 1.5 threads 7 = SS enclosure, ½" NPT threads *8 = SS enclosure, ¾" NPT threads 9 = SS enclosure, M20 X 1.5 threads TF1 = Temperature Switch, fixed differential without scale TF2 = Temperature Switch, fixed differential with scale in oC T1H = 25 - 90 T2H = 70 - 150 T3H = 120 - 215 *TA1 = temperature switch, adjustable differential without scale *TA2 = temperature switch, adjustable differential with scale in oC *Not available for MT model For dual cable entry contact Sales Office *Available with A6, A7, A9 & B9 (in group 6) only A1 = General B1 = Brass / 2 = purpose Dia. 9.5 mm, 123 SS316 / microswitch, rated mm length, with 3/8" 2.0 meter at 15 A; 250 VAC BSP (M) thermowell *A6 = Adjustable connection deadband B2 = Brass / *A7 = 2SPDT switching elements Dia. 9.5 mm, 123 mm length, with 3/8" NPT (M) thermowell *A8 = General connection purpose microswitch B3 = Brass / *A9 = General Dia. 9.5 mm, 123 purpose microswitch mm length, with 1/2" B1 = General purpose AC/DC NPT (M) thermowell connection *B7 = 2SPDT Switching Elements *B9 = 2SPDT Switching Elements for adjustable differential * For detailed specifications of microswitches, please refer note under Range Selection Table More options available. Please contact sales office. E.g. An Industrial Temperature Switch, with 1/2"NPT cable entry in aluminum housing as 1 SPDT, fixed differential without scale, having 25°C to 90°C temperature range, with 15 Amp. microswitch, with Brass 9.5 mm diameter bulb, having length 123 mm with 3/8"BSP(M),with 2.0 meter SS316 capillary length shall be specified by Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7 Group 8 MD 1 TF1 T1H A1 B1 2 Please specify full model number to avoid ambiguity. 57 Bulletin No. KA220802cairo 1.16.0 (https://cairographics.org)