Cookies på Omegas websteder Vi anvender cookies på vores websted. Disse cookies er afgørende for, at webstedet kan fungere korrekt. Hvis du fortsætter uden at ændre dine indstillinger, antager vi, at du gerne vil modtage alle de cookies, der anvendes på dette websted. Du finder flere oplysninger om cookies ved at klikke her
Advanced Features
Programmable via detachable display front, process
calibration, signal and relay simulation, password protection,
error diagnostics and selection of help text in several
languages. Application
• Linearized, electronic temperature measurement with RTD or TC sensor.
• Conversion of linear resistance variation to a standard analog
current/voltage signal, i.e. from solenoids and butterfly
valves or linear movements with attached potentiometer.
• Power supply and signal isolator for 2-wire transmitters.
Process control with 2 pairs of potential-free relay contacts
and analog output.
• Galvanic separation of analog signals and measurement of floating signals.
• The DRST-UR is designed according to strict safety requirements and is therefore suitable for application in SIL 2 installations. Technical Characteristics
• When DRST-UR is used in combination with the DRSL-DISPLAY programming front, all operational parameters can be modified to suit any application. As the DRST-UR is designed with electronic hardware switches, it is not necessary to open the
device for setting of DIP-switches.
• A green/red front LED indicates normal operation and malfunction. A yellow LED is ON for each active output relay.
• A continuous check of vital stored data for safety reasons.
• 4-port 2.3 kVAC galvanic isolation.
Environmental Conditions Operating Temperature: -20 to 60°C Storage Temperature -20 to 85°C Calibration Temperature20 to 28°C Relative Humidity < 95% RH (non-cond.) Protection Degree IP20 Mechanical Specifications Dimensions (H x W x D): 109 x 23.5 x 104 mm Dimensions (H x W x D) w/ 4501/4511:109 x 23.5 x 116 / 131 mm Weight Approx: 170 g Weight incl. 4501 / 4511 (approx.): 185 g/270 g Wire Size: 1 x 2.5 mm2 stranded wire Screw Terminal Torque: 0.5 Nm Vibration: IEC 60068-2-6 2 to 13.2 Hz: ±1 mm 13.2 to 100 Hz: ±0.7 g Common Specifications Supply Supply Voltage, Universal: 21.6 to 253 Vac, 50 to 60 Hz or 19.2 to 300 Vdc Fuse: 400 mA SB/250 Vac Max. Required Power: = 2.5 W Isolation Voltage Isolation Voltage, Test/Working: 2.3 k Vac/250 Vac Response Time Temperature Input (0 to 90%, 100 to 10%) = 1 s mA/V Input (0 to 90%, 100 to 10%): = 400 ms Auxiliary Supplies 2-w. supply (term. 44...43): 25 to 16 Vdc / 0 to 20 mA Programming Communication enabler DRSL-DISPLAY Signal/Noise Ratio: Min. 60 dB (0 to 100 kHz) Accuracy Better than 0.1% of sel. range EMC Immunity Influence < ±0.5% of span Extended EMC Immunity: NAMUR NE21, A Criterion, Burst: < ±1% of span Input specifications RTD input RTD Type:
Pt10/20/50/100/200/250;
Pt300/400/500/1000;
Ni50/100/120/1000;
Cu10/20/50/100 Cable Resistance per Wire 50 Ω (max.) Sensor Current: Nom. 0.2 mA Effect of Sensor Cable Resistance (3/4-Wire): < 0.002 Ω/Ω Sensor Error Detection: Yes Short Circuit Detection: < 15 Ω Linear Resistance Input Linear Resistance Min/Max: 0 to 10000 Ω
Potentiometer Input Potentiometer Min/Max: 10 Ω to 100 kΩ TC Input Thermocouple Type: B, E, J, K, L, N, R, S, T, U, W3, W5, LR Cold Junction Compensation (CJC) via ext. Sensor in Connector 5910: 20 to 28°C = ±1°C, -20 to 20°C/28 to 70°C = 2°C CJC via int. Mounted Sensor: ±(2.0°C + 0.4°C * ∆t) ∆t =: Internal temp.-ambient temp. Sensor Error Detection: Yes Sensor Error Current: When Detecting/Else: Nom. 2 µA / 0 µA Current Input Measurement Range: 0 to 20 mA Programmable Measurement Ranges: 0 to 20 and 4 to 20 mA Input Resistance: Nom. 20 Ω + PTC 50 Ω
Sensor Error Detection: Loop Break 4 to 20 mA: Yes Voltage Input Measurement Range 0 to 12 Vdc Programmable Measurement Ranges: 0/0.2 to 1, 0/1 to 5, 0/2 to 10 Vdc Input Resistance: Nom. 10 MΩ Output Specifications Current Output Signal Range: 0 to 20 mA Programmable Signal Ranges: 0 to 20/4 to 20/20 to 0/20 to 4 mA Load (@ Current Output): ≤ 800 Ω Load Stability: ≤ 0.01% of span/100 Ω Sensor Error Indication: 0/3.5/23 mA/none NAMUR NE43 Upscale/Downscale:23 mA/3.5 mA Output Limitation, on 4 to 20 and 20 to 4 mA Signals: 3.8...20.5 mA Output Limitation, on 0 to 20 and 20 to 0 mA Signals: 0 to 20.5 mA Current Limit:≤ 28 mA Voltage Output Signal Range: 0 to 10 Vdc Programmable Signal Ranges: 0/0.2 to 1; 0/1 to 5 ; 0/2 to 10; 1 to 0.2/0; 5 to 1/0; 10 to 2/0 V Load (@ Voltage Output): ≥ 500 kΩ Relay Output Relay Functions: Setpoint, Window, Sensor error, Latch, Power and Off Max. Voltage: 250 VRMS Max. Current:2 AAC or 1 ADC Max. AC Power: 500 VA Observed Authority Requirements EMC: 2014/30/EU LVD: 2014/35/EU EAC:TR-CU 020/2011 Approvals UL: UL 508/C22.2 no. 14 DNV-GL Marine Stand. f. Certific. No. 2.4 EU RO Mutual Recognition Type Approval: MRA000000Z SIL Hardware assessed for use in SIL applications