STS | Programmable Level Sensor | PTM/N/RS485

PTM/N/RS485

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Operating and Safety Instructions

OVERVIEW

Features

Pressure measuring range: 1…250 mH2O
Adjustable 1:4 of the nominal range within -5% to +105% (analog output)
Accuracy: ≤ ± 0.25 / 0.10 % FS
Temperature measuring range: -25…85 °C
Operating temperature: -5…80 °C
Process temperature: -5…80 °C
2 Output signals (p & T): 4…20 mA
Interface: RS485 (Modbus RTU)
Materials: Stainless steel, Titanium
Feature: Recalibration with software possible, optional surge (lightning) protection

Customer benefits

Pressure measuring range: 1…250 mH2O
Adjustable 1:4 of the nominal range within -5% to +105% (analog output)
Accuracy: ≤ ± 0.25 / 0.10 % FS
Temperature measuring range: -25…85 °C
Operating temperature: -5…80 °C
Process temperature: -5…80 °C
2 Output signals (p & T): 4…20 mA
Interface: RS485 (Modbus RTU)
Materials: Stainless steel, Titanium
Feature: Recalibration with software possible, optional surge (lightning) protection

SPECIFICATIONS

Pressure measuring range (mH2O)

	1 ... 5	> 5 ... 20	> 20 ...250
Overpressure	3 bar	3 x FS (≥ 3 bar)	3 x FS
Burst pressure, (1)	> 200 bar	> 200 bar	> 200 bar
Accuracy, (2), (± % FS)	≤ 0.25	≤ 0.1	≤ 0.1
Total error, (3), (4) (± % FS)
-10...50°C, (typ./max.)	≤ 0.15 / 0.3 (≤ 200 mbar: 0.3 / 0.6)	≤ 0.15 / 0.3	≤ 0.15 / 0.3
-25...85°C, (typ./max.)	≤ 0.65 / 0.7 (≤ 200 mbar: 0.65 / 0.8)	≤ 0.65 / 0.7	≤ 0.55 / 0.7
Long term stability, (5)	≤ 0.5% FS/< 4 mbar	≤ 0.2% FS/< 4 mbar	≤ 0.1% FS/< 0.2% FS

Temperature measuring range


Standard, (1), (2)	-10...50 °C
Lower end of range (2)	-25 °C
Upper end of range (2)	85 °C
Accuracy	≤ ± 2 °C

Temperature range


Operating temperature	-5...80 °C
Process temperature	-5...80 °C
Storage temperature	-10...80 °C

Electrical specifications

Physical specifications


Materials	Stainless steel (316L / 1.4435), titanium (Gr. 2), (1)
Transducer	Stainless steel (316L / 1.4435), titanium (Gr. 2), (1)
Seals	Viton (Standard), EPDM, Kalrez, NBR
Cable	PUR, FEP, PE
Housing	Stainless steel (316L / 1.4404), titanium (Gr. 2)
Weight (2)	157 g

ACCESSORIES

Interface


101138	PTM - Interface

Software


101224	PC Software V1.50

CERTIFICATES

CE Declaration of Confirmity 2016-04-13