MICROSTAT-M. Page 1/7. Data Sheet Type /2160. Type / /

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1 3639 Fulda, Germany Postal address: 3635 Fulda, Germany Phone: Fax: Harlow - Essex CM2 2DY, UK Data Sheet 6851 Page 1/7 MICROSTAT-M Particularities Electromechanical temperature controller with indication with one microswitch Housing sizes: 6, 8 and 1 dia. Bezel sizes: 72 x 72 and 96 x 96 Type 6851/216 Brief description The MICROSTAT-M is an electromechanical temperature controller with indication for universal use. The instrument has a plastic housing and a liquid-filled or gas-filled measuring system. The temperature-dependent change in volume of a liquid-filled measuring system, or the temperature-dependent change in pressure of a gas-filled system, is converted by a Bourdon tube into a rotary movement of the pointer, without any transmission gearing. The rotary movement of the pointer spindle operates the microswitch through a lever system. Type 6851/2572

2 3639 Fulda, Germany Postal address: 3635 Fulda, Germany Phone: Fax: Harlow - Essex CM2 2DY, UK Data Sheet 6851 Page 2/7 Technical data Housing or bezel black plastic; steel housing (extra code 415) Protection front: IP53 to EN rear: IP to EN (IP54 with extra code 426) Scale white, black lettering Accuracy class Class 2 to EN 1319 Measuring system liquid-filled gas-filled indication range 35 C indication range 4 C Time constant t.632 approx. 12 sec, measured in water bath, with a 6 dia. copper probe approx. 4 sec, measured in oil bath, with a 1 dia. stainless steel probe Ambient temperature error effect in % of indication range (referred to the deviation from the reference value +23 C) on housing.15% of indication range per C change in ambient temperature.5% of indication range per C change in ambient temperature on capillary (per meter).3% of indication range per C change in ambient temperature no effect higher ambient temperature higher temperature indication lower switching point standard extra code (TZ) 651 extra code (TZ) 65 Electrical contact Contact type single-pole microswitch with a mechanically operated changeover contact Contact rating 23 V AC +1/-15%, Hz, p.f. = 1 (.6) 5 (1.5) A 3 (1) A 1 (3) A Switching differential approx. 2% of indication range 2 to 4% of indication range Switching point accuracy ±.5% of indication range referred to the switch-off point with rising temperature Switching reliability To ensure maximum switching reliability, we recoend a minimum voltage of 24 V and a minimum current of 1 ma. standard extra code (TZ) 57 Electrical connection faston connectors A 6.3 x.8 to DIN screw terminals: for up to conductor cross-section Setpoint adjustment by setting device on window Limit temperatures for transport and storage: -2 to +7 C (for indication range -4 to +4 C: up to 5 C; for indication range -3 to +5 C: up to 6 C) Nominal position unrestricted Note: Physical and toxic features of the expansion means, which could emerge in the event of a measuring system break. Control range with Hazardous reactions Fire and explosion hazard hazardous to Information about toxicology scale limit value Ignition temperature Explosion limit waters irritant dangerous to toxic health < +2 C C,6-8 V% yes yes 1) 2 C +35 C no + 49 C - - yes yes 1) no 35 C +5 C no no no no no 1) There is currently no statement by the health authority concerning hazards to health in the event of short-term exposure and low concentration, e.g. measuring system break.

3 3639 Fulda, Germany Postal address: 3635 Fulda, Germany Phone: Fax: Harlow - Essex CM2 2DY, UK Dimensions Types: 6851/ /216 TZ 415 Data Sheet 6851 Page 3/7 Types: 6851/ /2572 TZ 415 Panel cut-out Ø 62 +,5 Types: 6851/ /218 TZ 415 Panel cut-out Ø 62 +,5 Types: 6851/ /2596 TZ 415 Panel cut-out Ø 82 +,5 ( 1 ) TZ 572 (indicator light) only with 92 x 92 +,8 panel cut-out Panel cut-out Ø 82 +,5 or 92 x 92 +,8 (TZ 46)

4 3639 Fulda, Germany Postal address: 3635 Fulda, Germany Phone: Fax: Harlow - Essex CM2 2DY, UK Dimensions Types: 6851/ /211 TZ 415 Data Sheet 6851 Page 4/7 Types: 6851/ /26 TZ /28 TZ /21 TZ 415 Panel cut-out Ø 12 +,5 Type Ø D Ø D1 Ø D3 Ø D4 Ø D5 Panel cut-out () Ø +,5 6851/ /26 TZ , /28 TZ , /21 TZ ,8 12 Extra code 426 ( 1 ) Extra code TZ 426

5 3639 Fulda, Germany Postal address: 3635 Fulda, Germany Phone: Fax: Harlow - Essex CM2 2DY, UK Data Sheet 6851 Page 5/7 Order details MICROSTAT-M Type 6851 Order code (1) Basic type 6851 Mechanical temperature controller MICROSTAT-M Class 2, with one microswitch (2) Basic type extensions 26 Style: 2; housing size: 6 dia. 28 Style: 2; housing size: 8 dia. (with TZ 415 only) 21 Style: 2; housing size: 1 dia. (with TZ 415 only) 216 Style: 21; housing size: 6 dia. 218 Style: 21; housing size: 8 dia. 211 Style: 21; housing size: 1 dia. (with TZ 415 only) 2572 Style: 25; housing size: 72 x Style: 25; housing size: 96 x 96 (3) Indication range (AB) to +4 C; measuring range 3 to +3 C, accuracy 2. C to +5 C; measuring range 2 to +4 C, accuracy 2. C to +12 C; measuring range 3 to +1 C, accuracy 4. C 87 - to +6 C; measuring range +1 to +5 C, accuracy 2. C 81 - to +8 C; measuring range +1 to +7 C, accuracy 2. C to +1 C; measuring range +1 to +9 C, accuracy 2. C to +12 C; measuring range +2 to +1 C, accuracy 4. C to +16 C; measuring range +2 to +14 C, accuracy 4. C to +2 C; measuring range +2 to +18 C, accuracy 4. C to +25 C; measuring range +3 to +22 C, accuracy 5. C to +25 C; measuring range +7 to +23 C, accuracy 4. C 84 - to +3 C; measuring range +3 to +27 C, accuracy 1. C to +3 C; measuring range +8 to +27 C, accuracy 5. C to +35 C; measuring range +5 to +3 C, accuracy 1. C to +35 C; measuring range +8 to +32 C, accuracy 1. C to +4 C; measuring range +5 to +35 C, accuracy 1. C to +45 C; measuring range +5 to +4 C, accuracy 1. C to +5 C; measuring range +5 to +45 C, accuracy 1. C to +6 C; measuring range +1 to +5 C, accuracy 15. C (4) Capillary type (FL) 1 2 FL2 copper capillary with copper braiding, approx. 2.5 dia. (up to +3 C top of indication range) 11 FL11 copper capillary with PE sleeve, approx. 3.5 dia. (up to +12 C top of indication range) 17 FL17 stainless steel capillary, 1.5 dia. 21 FL21 copper capillary, 1. dia. (up to +3 C top of indication range) (5) Capillary length special length (specify in plain text: in 1 steps, maximum length: 1 )

6 3639 Fulda, Germany Postal address: 3635 Fulda, Germany Phone: Fax: Harlow - Essex CM2 2DY, UK Data Sheet 6851 Page 6/7 Order details MICROSTAT-M Type 6851 Order code (6) Process connection (PA) 1 75 TF 1; temperature probe with stepped support tube 752 TF 11; temperature probe without support tube 843 TA 2; iersion tube with union nut and loose nipple TA 3; iersion tube with loose union nut 847 TA 6; sliding clamp fitting on support tube TA 2; iersion tube with loose nipple and shoulder TA 21; iersion tube with loose plug and conical seal 873 TA 22; iersion tube with loose plug, conical seal and loose nipple 2 41 TA 23; iersion tube with plug and spring clip 913 SH 7; screw-in pocket, assembled, with clamping clip and fixing screw 2 82 SH 9; weld-in pocket, assembled, with clamping clip and fixing screw SH 9; (not with FL21 - welding shoulder with steel ) 876 SH1; screw-in pocket, assembled SH11; screw-in pocket, assembled 2 (7) Diameter of process connection (PA) dia. 8 8 dia. 1 1 dia dia dia. (8) Thread for process connection (PA) 1 no thread (with TF 1 and TF 11) 13 G 3 / 8 thread 14 G 1 / 2 thread 15 G 3 / 4 thread 114 M 1 x 1 thread (with TA 23 and SH 11 only) (9) Material of probe / support tube 1 26 stainless steel (CrNi, ) 96 copper (Cu) / brass (CuZn) (up to 2 C) 95 stainless steel (CrNi, ) - probe / brass (CuZn) - support tube (from 25 C) (1) Material of process connection (PA) 1 none (TF1 and TF11 only) 1 steel (St) 26 stainless steel (CrNi, ) 46 brass (CuZn)

7 3639 Fulda, Germany Postal address: 3635 Fulda, Germany Phone: Fax: Harlow - Essex CM2 2DY, UK Data Sheet 6851 Page 7/7 Order details MICROSTAT-M Type 6851 Order code (11) Fitting length of process connection (PA) 1 (dimension EL or S) minimum fitting length TF 11 (active probe dimension) special length (specify in plain text, in 5 steps) (12) Switching output (SA) 1 2 SA 2 one contact 2 4 Connection diagram, standard Connection diagram, with indicator light (TZ 572) (13) Extra codes (TZ) no extra code 57 Electrical connection by screw terminals for cable up to conductor cross-section 426 Plastic cover to protect the tab connectors or screw terminals against touching and splashing water, IP54, with cable gland, suitable for 6 8 cable dia. 65 Microswitch 1 (3) A ( 23 V AC/DC +1/-15%, Hz, p.f. = 1 (.6)) (not with TZ 577) 518 Stop for upper or lower limit of setpoint adjustment, factory-set 315 Capillary reinforcement on housing and probe (not with FL21) 477 Setpoint adjustment protected by screw cap. Adjustment with tool (only in case size 6 diameter in plastic housing). 577 Protection against capillary break (not with TZ 65, 651) 52 Switching point fixed in the factory. 522 Customized scale 743 Class 1.5 PE 1 N L1 N 2 4 Special versions on request! Order code (1) (2) (3) (4) (5) (6) (7) (8) (9) (1) (11) (12) (13) 6851 / /...,... Order example 6851 / / 3 1 See Data Sheet 6873 for description and features. 2 Screw-in spigot to DIN 3852 Form A. 3 List extra codes in sequence, separated by coas.