Description
Level Sensor PanCake® PR 6251 and Mounting Kit PR 6051
The space-saving solution for simple applications
Technical specifications
| Level sensor PanCake® PR 6251 | ||||||
| Parameters | Description | Abbr. | L | LA | LE | Unit |
| Accuracy class | 0.5 | 0.5 | 0.5 | %Emax | ||
| Minimal dead load | Lowest limit of specified measuring range | Emin | 0 | 5 | 0 | %Emax |
| Maximum capacity | Highest limit of specified measuring range | Emax | See ordering information table | kg | ||
| Safe load limit | Maximum load possible without irreversible damage | Elim | 150 | 120 | 150 | %Emax |
| Destructive load | Danger of mechanical destruction | Ed | 300 | 300 | 300 | %Emax |
| Rated output | Relative output signal at maximum capacity (LA = 4…20 mA) | Cn | 2 | 16 mA | 2 | mV/V |
| Tolerance on rated output | Permissible deviation from rated output | dc | <4 | <4 | <4 | %Cn |
| Zero output signal | Load cell output signal under unloaded condition | Smin | 0±4 | 4±4 | 0±4 | %Cn |
| Reproducibility | Max. change in load cell output for repeated loading | eR | <0.1 | <0.1 | <0.1 | %Cn |
| Creep | Max. change of output signal at Emax during 30 min. | dcr | <0.1 | <0.1 | <0.1 | %Cn |
| Non-linearity | Deviation from best straight line through zero | dLin | <0.25 | <0.25 | <0.25 | %Cn |
| Hysteresis | Max. difference in between loading and unloading | dhy | <0.15 | <0.15 | <0.15 | %Cn |
| Temperature effect (TK) of Smin | Max. change of Smin in BT | TKSmin | <0.15 | <0.15 | <0.15 | %Cn/10 K |
| Temperature effect (TK) of parameter | Max. change of C in BT | TKc | <0.1 | <0.1 | <0.1 | %Cn/10 K |
| Input impedance | between supply terminals | RLC | 645±60 | / | 645±60 | Ω |
| Output impedance | between measuring terminals | RO | 635±15 | / | 635±15 | Ω |
| Insulation impedance | Between measuring circuit and housing at 100 VDC | RIS | >5000 ×106 | / | >5000 ×106 | Ω |
| Nominal supply voltage range | In compliance with the technical data | Bu | 4 to 24 | 20 to 28 | 4 to 24 | V |
| Max. supply voltage | Continuous operation without damage | Umax | 32 | 28 | 25 | V |
| Nominal ambient temperature range | In compliance with the technical data | BT | -10 to +70 | -10 to +55 | -10 to +55 | °C |
| Service temperature range | Continuous operation without damage | BTU | -30 to +95 | -30 to +70 | -30 to +95 | °C |
| Storage temperature range | without electrical and mechanical stress | BTI | -40 to +95 | -40 to +80 | -40 to +95 | °C |
| Marginal eccentricity | accepted distance from measuring axis | Sex | 10 | mm | ||
| Vibration resistance | Resistance against oscillations (IEC 68-2-6-Fc) | 20 g, 100 h, 10 to 150 Hz | ||||
| Barometric pressure influence | Barometric pressure influence on the output signal | PKSmin | <20 | g/kPa | ||
| Nominal deflection | Max. elastic deforming under maximum capacity | Snom | to 2 t <0.1/16 t <0.2 | mm | ||
| Material (sensor) | – Stainless steel 1.4057 at load level 500 kg … 5 t
– Stainless steel 1.4542 at load level 10 t and 16 t |
|||||
| Protection class | IP68 | |||||
| Cables | Length: 5 m
Diameter: 5 mm Cross section: 4 × 0.35 mm2 Material of cable sheathing: TPE |
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| Bending radius | ≥25 mm in the case of fixed installation
≥75 mm in the case of flexible installation |
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| Mounting kits PR 6051 | ||||
| Maximum capacity of the load cell
PR 6251 |
Mounting kit/ accessories |
Material |
Description/comments |
Height (mm) |
|
500 kg– 2 t |
PR 6051/20S |
Stainless steel 1.4301 |
Installation adapter for PanCake® 1“ (spherical cap base) |
180 (incl. load cell) |
|
3 t–5 t |
PR 6051/21S |
Installation adapter for PanCake® 1.5“ (spherical cap base) |
180 (incl. load cell) |
|
|
10 t |
PR 6051/22S |
Installation adapter for PanCake® 2“ (spherical cap base) |
190 (incl. load cell) |
|
|
500 kg– 16 t |
PR 6051/00S |
Securing reverse disc |
500 kg to 5 t: 40 10 t to 16 t: 50 |
|
|
PR 6051/12S |
Stainless steel 1.4542 |
Base plate |
18 |
|
Technical diagrams
Level sensor PanCake® PR 6251
| Model | A [mm] | D [mm] | E [mm] | H [mm] | R [mm] |
| PR 6251/52 | 5 | 18 | 57.5 | 25 | 25 |
| PR 6251/13 | 5 | 18 | 57.5 | 25 | 25 |
| PR 6251/23 | 5 | 18 | 57.5 | 25 | 25 |
| PR 6251/33 | 5 | 18 | 57.5 | 25 | 50 |
| PR 6251/53 | 3 | 18 | 63 | 25 | 50 |
| PR 6251/14 | 8 | 21.7 | 57.5 | 35 | 70 |
| PR 6251/24 | 5 | 23 | 67 | 35 | 100 |
Mounting kit PR 6051
Reverse disc PR 6051/00S
Base plate PR 6051/12S
Installation adapter PR 6051/20S (base plate PR 6051/12S not included in scope of delivery)
Installation adapter PR 6051/21S (base plate PR 6051/12S not included in scope of delivery)
Installation adapter PR 6051/21S (base plate PR 6051/12S not included in scope of delivery)
Installation adapter PR 6051/22S (base plate PR 6051/12S not included in scope of delivery)
Ex approval
Scope of validity: PR 6251 (500 kg to 16 t)
| Level sensor PanCake® PR 6251 certificates | |||
| Marking | Certificate number | For | |
| II 1G Ex ia IIC T6 Ga
Ex ia IIC T6 Ga |
BVS 16 ATEX E 005
IECEx BVS 16.0005 |
Only PR 6251/..LE | |
| II 1D Ex ta IIIC T160°C Da Ex ta IIIC T160°C Da | TÜV 03 ATEX 2301X IECEx TUN 17.0025X | Only PR 6251/..L | |
| II 3G Ex nA IIC T6 Gc | Manufacturer’s declaration | Only PR 6251/..L | |
| II 3D Ex tc IIIC T85 °C Dc | Manufacturer’s declaration | Only PR 6251/..L | |
| IS CL I, II, III, DIV 1, GP A, B, C, D, E, F, G Entity – 4012 101 5688
NI CL I, II, III, DIV 2, GP A, B, C, D, E, F, G NIFW – 4012 101 5688 T4A Ta = –30°C to 70°C; T5 Ta = –30°C to 55°C |
FM17US0276 | Only PR 6251/..L | |
| IS CL I, II, III, DIV 1, GP A, B, C, D, E, F, G Entity – 4012 101 5688
NI CL I, II, III, DIV 2, GP A, B, C, D, E, F, G NIFW – 4012 101 5688 T4A Ta = –30°C to 70°C; T5 Ta= –30°C to 55°C |
FM17CA0138 | Only PR 6251/..L | |
Ordering information
Level sensor PanCake®, accuracy class L = 0.5%
| Type | Load level | Order number |
| PR 6251/52L | 500 kg | 940526251529 |
| PR 6251/13L | 1 t | 940526251139 |
| PR 6251/23L | 2 t | 940526251239 |
| PR 6251/33L | 3 t | 940526251339 |
| PR 6251/53L | 5 t | 940526251539 |
| PR 6251/14L | 10 t | 940526251149 |
| PR 6251/24L | 16 t | 940526251249 |
Level sensor PanCake®, accuracy class L = 0.5%, EX version
| Type | Load level | Order number |
| PR 6251/52LE | 500 kg | 940566251529 |
| PR 6251/13LE | 1 t | 940566251139 |
| PR 6251/23LE | 2 t | 940566251239 |
| PR 6251/33LE | 3 t | 940566251339 |
| PR 6251/53LE | 5 t | 940566251539 |
| PR 6251/14LE | 10 t | 940566251149 |
| PR 6251/24LE | 16 t | 940566251249 |
Level sensor PanCake®, accuracy class L = 0.5%, with analogue amplifier (4–20 mA)
| Type | Load level | Order number |
| PR 6251/52LA | 500 kg | 940556251529 |
| PR 6251/13LA | 1 t | 940556251139 |
| PR 6251/23LA | 2 t | 940556251239 |
| PR 6251/33LA | 3 t | 940556251339 |
| PR 6251/53LA | 5 t | 940556251539 |
| PR 6251/14LA | 10 t | 940556251149 |
| PR 6251/24LA | 16 t | 940556251249 |
Installation adapter PR 6051
| Type | Order number |
| PR 6051/20S | 940536051202 |
| PR 6051/21S | 940536051212 |
| PR 6051/22S | 940536051002 |
Mounting kits PR 6051 – mounting plate
| Type | Order number |
| PR 6051/12S | 940596051122 |
| PR 6051/00S | 940596051002 |
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