MAGNA large-digit temperature displays can be ordered for four RTD types (DIN Pt100, ANSI Pt100, Ni120 nickel RTD, Cu10 copper RTD) or for seven thermocouple types (J, K, T, E, N, R, S). Four red LED digits show temperatures in °C or °F with 1° or 0.1° resolution. Accuracy is excellent, as shown under Specifications.
Viewing distances up to 100 m (320 ft) are achieved with large digits for reading across a plant floor or an outdoor yard. Four digit heights are available as standard: 57 mm (2-1/4"), 102 mm (4.0"), 150 mm (5.9"), and 200 mm (7.9"). A rule of thumb is that viewing distance in feet is 40 times digit height in inches, or in metric terms, that viewing distance in meters is digit height in millimeters divided by 2. Segmented digits are used for normal brightness 2-1/4” and 4.0" digits. Individual 5 mm LED pixels are used for larger digits and for outdoor brightness versions.
The MAGNA temperature display includes a built-in 4-20 mA process signal conditioner board and an external Laureate temperature transmitter with a 4-20 mA process signal output.
Use of an external transmitter allows long 4-20 mA cable runs while keeping thermocouple or RTD leads short. The display unit and transmitter are sold as a calibrated system. Simply specify the probe type and the HI and LO temperature end points. Your main task will be to make the 4-20 mA two-wire cable connection.
Standard outputs that come with the Laureate transmitter in additon to the 4-20 mA analog output are two 120 mA solid state relays and a serial data output, which can be set to RS232 or RS485. These outputs do not need to be used.
The system can be reprogrammed by the user for other probe types and temperature ranges.
Environmental sealing to IP65 (NEMA-4X) is standard for the display unit. Electrical connections are via water-tight compression glands. Outdoor LED brightness is optional, as is a built-in heater for outdoor operation down to -25°C (-13°F). Mounting options are panel mount, wall mount or suspension mount.
A Laureate RTD or thermocouple transmitter can be DIN rail mounted outside of the display housing.
| Display Unit | ||||||
|---|---|---|---|---|---|---|
| Readout | 4 red LED digits | |||||
| Digit height | 57 mm (2-1/4"), 102 mm (4.0"), 150 mm (5.9") or 200 mm (7.9") | |||||
| Brightness | Indoor or outdoor brightness as ordered. | |||||
| Five keypad adjustable brightness levels. | ||||||
| Input Signal | 4-20 mA signal from external Laureate transmitter | |||||
| Power (to display unit and external transmitter) | ||||||
| AC power (standard ) | 100-240 Vac | |||||
| DC power (optional) | 11-30 Vdc | |||||
| Max power consumption | 30 VA | |||||
| RTD Input (to external transmitter) | ||||||
| Calibration, Pt 100 DIN | Per IEC 751 (ITS-90) | |||||
| Calibration, Pt 100 ANSI | NIST Monograph 126 | |||||
| Calibration, Ni 120 | DIN 43760 | |||||
| Max error at 25°C, Pt100 | ±0.04°C (±0.07°F) ±0.01% of reading | |||||
| Span tempco | ±0.003% of reading/°C | |||||
| Zero tempco | ±0.03 deg/deg | |||||
| Provision for user calibration | Multiplier of RTD resistance plus offset in degrees | |||||
| Connection | 2, 3 or 4-wire | |||||
| Overvoltage protection | 125 Vac | |||||
| Open sensor indication | 0 mA or > 20mA output, user selectable | |||||
| Sensor lead resistance | 2-wire, 10 mdeg/Ω/deg up to 10Ω | |||||
| Tempco per conductor | 3 & 4-wire, 10 mdeg/Ω/deg up to 100Ω | |||||
| RTD Metal |
Alpha | R at 0°C |
R at top of range |
Excitation Current |
Range | Conformity Error |
| Platinum | 0.003850 (DIN) |
100Ω | 390.48Ω at 850°C |
196 µA | -202°C to +850°C -331°F to +1562°F |
±0.03°C ±0.05°F |
| Platinum | 0.003902 (ANSI) |
100Ω | 394.36Ω at 850°C |
196 µA | -202°C to +631°C -331°F to +1168°F |
±0.04°C ±0.07°F |
| Nickel | 0.00672 | 120Ω | 380.31Ω at 260°C |
196 µA | -80°C to +260°C -112°F to +500°F |
±0.05°C ±0.09°F |
| Copper | 0.00427 | 9.035Ω | 19.116Ω at 260°C |
5.0 mA | -100°C to +260°C -148°F to +500°F |
±0.05°C ±0.09°F |
| Thermocouple Input (to external transmitter) | ||||||
| Calibration | NIST Monograph 125 (IPTS-68) | |||||
| Overall error at 25°C | ±0.01% of full span ± conformity error | |||||
| Span tempco | ±0.003% of reading/°C | |||||
| Reference junct. accuracy | 0.5°C, 10°C to 40°C | |||||
| Input resistance | 1 GΩ | |||||
| Input current | 100 pA | |||||
| Max lead resistance | 1 kΩ max for rated accuracy | |||||
| Overvoltage protection | 125 Vac | |||||
| NMR at 50/60 Hz | 80 dB plus selectable digital filter | |||||
| CMR, DC-60 Hz | 120 dB with 500 ohm imbalance | |||||
| CMV, DC-60 Hz | 250 Vac from power and earth grounds | |||||
| TC Type | Range | Conformity Error | ||||
| J | -210°C to +760°C (-347°F to +1400°F) | ±0.09°C (±0.16°F) | ||||
| K | -244°C to +1372°C (-408°F to +2501°F) | ±0.1°C (±0.17°F) | ||||
| T | 0°C to +400°C (32°F to 752°F) -257°C to 0°C (-430°F to +32°F) |
±0.03°C (±0.05°F) ±0.2°C (±0.36°F) |
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| E | -240°C to +1000°C (-400°F to +1830°F) | ±0.18°C (±0.32°F) | ||||
| N | -245°C to +1300°C (-410°F to +2370°F) | ±0.10°C (±0.17°F) | ||||
| R | -45°C to +1768°C (-49°F to +3214°F) | ±0.17°C (±0.31°F) | ||||
| S | -46°C to +1768°C (-51°F to +3214°F) | ±0.12°C (±0.22°F) | Analog Output (from external transmitter) | |||
| Output levels | 4-20 mA linearized to temperature | |||||
| Output Isolation | 16 bits (65,536 steps) | |||||
| Output error | ±0.02% of output span ± overall input error | |||||
| Compliance at 20 mA | 10V (0-500Ω load) | |||||
| Output isolation | 250V rms working, 2.3 kV rms per 1 minute test | |||||
| Scaling | Via PC, free Instrument Setup software, and cables CBL02 & CBL04 | |||||
| Step response time | 100 ms | |||||
| Relay Outputs (from external transmitter) | ||||||
| Relay type | Two solid state relays, SPST, normally open, Form A | |||||
| Load rating | 120 mA at 140 Vac or 180 Vdc | |||||
| Special features | Actuate above or below setpoint, latching or non-latching, disabled | |||||
| Setup | Via PC and free Instrument Setup (IS) software | |||||
| Span hysteresis, split hysteresis, deviation band around setpoint | ||||||
| Programmable output time delay, 1 to 128 readings | ||||||
| Environmental | ||||||
| Storage temperature | -20°C to +55°C | |||||
| Operating temperature | 0°C to 50°C, non-condensing. | |||||
| -25°C to 50°C, non-condensing, with MHTR AC heater option. | ||||||
| Sealing of display unit | NEMA-4 (IP65) standard, all-round | |||||
| Connections to display unit | Via M12 compression glands | |||||
| Mounting to display unit | Wall mount, suspension mount or panel mount | |||||
| Display Format |  |
| Digit Height | Case Width x Height |
|---|---|
| 57 mm (2.2") | 376 x 155 mm (14.8" x 6.1") |
| 102 mm (4.0") | 434 x 196 mm (17.1" x 7.7") |
| 150 mm (5.9") | 580 x 247 mm (22.8" x 9.7") |
| 200 mm (7.9") | 750 x 290 mm (29.5" x 11.4") |
| Case depth | 75 mm (3.0") |
| Note: | Models with 57 mm (2.2") digits come with the larger 6-digit case. For panel mount versions, add 18 mm (0.7") to case width and height for the bezel and 25 mm (1.0") for cable glands in back of the case. |
Click on the radio buttons to build a standard model number with pricing (shown below the Ordering Guide). Prices are in US dollars and do not include shipping or duty charges (export sales). Please see our explanations and limitations applicable to pricing and online orders.
Prices shown are in US Dollars and are Laurel's manufacturer's suggested retail price (MSRP) in the USA. Orders are processed manually, not directly by our shopping cart system. You don't have to supply credit card information when placing an online order.
North American Orders. Laurel does not sell factory-direct in the USA or Canada. Online sales orders are filled through distribution. During the ordering process, you will have the chance to select an authorized Laurel distributor, or you can ask Laurel to refer you to a distributor. The distributor will then contact you to quote shipping, tax and duty (where applicable), and arrange for payment.
International Orders. If your ship-to address indicates that you are outside of the USA or Canada and Laurel has a distributor in your country, we will forward your order to that distributor for follow-up. If Laurel does not have a distributor in your country, we will email you an order acknowledgment and a pro forma invoice which states the product price, shipping charges, and wire transfer information, which includes a $25 bank wire transfer fee.
Questions about your order? Please email your distributor or sales@laurels.com
MAGNA units are built to order. MAGNA orders are non-cancelable and non-returnable.
Customized large digit displays are available by special quotation:
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