The Berthold UniProbe LB 490 (Part number: 38477-120) is a level evaluation unit featuring a scintillation counter with a 50/50 NaI crystal and an axial collimator for irradiation. Designed for demanding industrial environments, this unit operates on a power supply of 95 to 250 V (50 - 60 Hz) and offers menu-controlled calibration via a HART-communicator, automatic decay compensation, and error indication. It is housed in durable stainless steel with NEMA 4X and IP66 protection, making it suitable for ambient temperatures ranging from -40 to +50 °C. For wiring, it includes four radial 3/4" NPT conduits. The unit provides one isolated 0/4 - 20 mA analog output (switchable between passive and active), one digital input for a hold-signal, three configurable relays for alternative signals (hold, max/min alarm, detector temperature, or radiation interference), and one failure relay rated for maximum 250VAC or 30VDC at up to 5A noninductive. Certified for hazardous locations, it carries ATEX II 2GD Ex d IIC T6 IP66 T 70°C flame-proof protection, as well as FM/CSA flame-proof protection for Class I, Division 1 & 2 (Groups A, B, C, D) and Class II, Division 1 & 2 (Groups E, F, G).
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| Manufacturer | Berthold |
|---|---|
| Country | |
| Part number | 38477-120 |
| Inner Code | 513374 |
| Product type | UniProbe LB 490 Level Evaluation Unit |
|---|---|
| Part number | 38477-120 |
| Catalogue title | 38477-120 |
| Device type | UniProbe LB 490 Level Evaluation Unit |
| Scintillation counter | crystal NaI 50/50 |
| Collimator for irradiation | axial |
| Power supply | 95 - 250 V, 50 - 60 Hz |
| Ambient temp | -40 to +50 |
| Analog output | 1 (0/4 - 20 mA, isolated, passive, switchable to active) |
| Digital input | 1 for hold-signal |
| Relays rating | Max. 250VAC or 30VDC at max. 5A noninductive |
| Relays count | 3 alternative signals + 1 failure relay |
| Conduits | 4 conduits radial 3/4" NPT |
| Flame proof protection ATEX | ATEX II 2GD Ex d IIC T6 IP66 T 70°C |
| Flame proof protection FM/CSA | Class I, Division 1&2, Groups A, B, C, D; Class II, Division 1&2, Groups E, F, G |
| Protection | Nema 4X / IP 66 |
| Housing | stainless steel |
| Customs tariff number | 90222900 |