Kern CPB 30K5DM counting balance 15 kg and 30 kg / 5 g and 10 g
€256.50
% Manufacturer's RRP: €285.00 10% below manufacturer's RRP
- Two weighing ranges: 15 kg with 5 g and 30 kg with 10 g readability
- Reproducibility 5 g and 10 g, linearity ± 10 g and ± 20 g, stabilisation time 2 s
- Conformity assessment under NAWI (2014/31/EU) optional ex works, item no. 965-228, class III, e = 5 g and 10 g, minimum load 100 g
- Counting resolution 60,000, minimum unit weight 500 mg (laboratory)
- Three displays, fill-to-target with audible signal, PRE-TARE, count totalising memory
- Stainless steel weighing plate 295 x 225 mm, adjustment weights 20 kg (F2) and 10 kg (F2), RS-232, internal rechargeable battery optional
Product information "Kern CPB 30K5DM counting balance 15 kg and 30 kg / 5 g and 10 g"
The Kern CPB is a counting balance with three displays, a fill-to-target function and a counting resolution of 60,000. There are six models available in two designs. The models ending in N (CPB 6K0.1N, 15K0.2N and 30K0.5N) have a weighing range of 6 kg, 15 kg or 30 kg. The models ending in DM (CPB 6K1DM, 15K2DM and 30K5DM) are multi-interval balances with two weighing ranges and can optionally be ordered with a conformity assessment under the NAWI Directive (2014/31/EU).
N or DM: which design is suitable
The N models are single-range balances with a readability of 0.1 g to 0.5 g. They are not verifiable. The DM models operate with two ranges: as the load increases or decreases, the balance automatically switches to the next higher or lower weighing range and the corresponding readability. For example, the CPB 15K2DM has a readability of 2 g up to 6 kg and 5 g above that up to 15 kg. The readability on the DM models is coarser than on the N models; however, the option of conformity assessment is available.
Verifiability per model
Conformity assessment under the NAWI Directive (2014/31/EU) is only available for the DM models, item no. 965-228 for the CPB 6K1DM, 15K2DM and 30K5DM. This is optional and can only be arranged ex works; according to Kern, a retrospective conformity assessment is not possible. To place an order, Kern needs the full address of the installation site. With conformity assessment, accuracy class III applies; the verification value e corresponds to the readability of the respective range (model table). Kern does not specify a conformity assessment for the three N models.
Counting with three displays
The three displays, with 20 mm high digits, show the weight, reference weight and total count simultaneously. The reference weight is entered via the keypad, alternatively a reference piece count. The automatic reference optimisation gradually improves the average value of the unit weight. The count totalising memory adds identical counted items to the total piece count and total weight. The minimum unit weight for piece counting ranges, depending on the model, from 100 mg to 500 mg under laboratory conditions and from 1 g to 5 g under standard conditions.
Target values and containers
The Fill-to-target function allows you to programme a target number of items or a target weight; an audible signal indicates when this has been reached. The PRE-TARE function manually subtracts the known weight of a container in advance; according to Kern, this is useful for fill quantity checks. At the touch of a button, the balance switches from counting mode to weighing mode. Accessories include a stainless steel fruit bowl (RFS-A02) and a signal lamp (CFS-A03).
Set-up and adjustment
The stainless steel weighing pan measures 295 x 225 mm on all six models, whilst the plastic housing measures 315 x 350 x 100 mm. With the display fitted, the device is 125 mm high. Adjustment is carried out using an external weight; the recommended weights and adjustment points are listed in the model table. This does not replace a calibration certificate, which is available separately (see below). A spirit level and adjustable feet are part of the equipment. The data sheet gives degree of protection IP65 of the load cell for the CPB 6K0.1N and the CPB 15K2DM; for the other models Kern gives no information on this.
Power supply, rechargeable battery and interface
The balances run on a plug-in mains adaptor for 100 V to 240 V; country adaptors for EU, UK, US and CH are included. An internal lead-acid rechargeable battery (GAB-A04) is optional. According to the data sheet, it lasts 90 h with the backlight off and 50 h with the backlight on and charges in 12 h. RS-232 is fitted as standard, as is the KCP command set. For USB, Ethernet, WLAN and Bluetooth, Kern offers converters and adaptors.
Typical applications
- Order picking and stocktaking: piece count from weight, target piece count with signal
- Packaging industry: fill quantity check with container weight deducted
- Electronics industry: counting small parts from a unit weight of 100 mg
- Plastics technology and production monitoring: checking the number of items in batches
- Applications with conformity assessment: DM models, ordered ex works
The N models are suitable when finer readability is important and the result is not used for official purposes. The DM models are suitable when the balance requires a conformity assessment.
Models at a glance
| Model | Weighing range (Max) | Readability (d) | Reproducibility | Linearity | Conformity assessment (NAWI) | Counting resolution | Minimum unit weight (laboratory / normal) | Recommended adjustment weights |
|---|---|---|---|---|---|---|---|---|
| CPB 6K0.1N | 6 kg | 0.1 g | 0.2 g | ± 0.4 g | no | 60,000 | 100 mg / 1 g | 5 kg (F2) and 1 kg (F2) |
| CPB 15K0.2N | 15 kg | 0.2 g | 0.4 g | ± 0.8 g | no | 60,000 | 250 mg / 2.5 g | 10 kg (F2) and 5 kg (F2) |
| CPB 30K0.5N | 30 kg | 0.5 g | 1 g | ± 2 g | no | 60,000 | 500 mg / 5 g | 20 kg (F2) and 10 kg (F2) |
| CPB 6K1DM | 3 kg and 6 kg | 1 g and 2 g | 1 g and 2 g | ± 2 g and ± 4 g | optional, e = 1 g and 2 g, minimum load 20 g | 60,000 | 100 mg / 1 g | 5 kg (F2) and 1 kg (F2) |
| CPB 15K2DM | 6 kg and 15 kg | 2 g and 5 g | 2 g and 5 g | ± 4 g and ± 10 g | optional, e = 2 g and 5 g, minimum load 40 g | 60,000 | 250 mg / 2.5 g | 15 kg (F2) |
| CPB 30K5DM | 15 kg and 30 kg | 5 g and 10 g | 5 g and 10 g | ± 10 g and ± 20 g | optional, e = 5 g and 10 g, minimum load 100 g | 60,000 | 500 mg / 5 g | 20 kg (F2) and 10 kg (F2) |
Technical details
These values apply to all models. Deviating values are given in the model table.
| Weighing system | Strain gauge |
| Type | N models: single-range balance; DM models: multi-interval balance with two weighing ranges |
| Stabilisation time | 2 s |
| Weighing pan | Stainless steel, 295 x 225 mm |
| Housing | Plastic, 315 x 350 x 100 mm, with display 125 mm high |
| Display | LCD, backlit, three displays, digit height 20 mm |
| Adjustment | external; adjustment points: CPB 6K0.1N 6 kg, 15K0.2N 15 kg, 30K0.5N 30 kg, 6K1DM 3 kg and 6 kg, 15K2DM 6 kg and 15 kg, 30K5DM 15 kg and 30 kg |
| Interfaces | RS-232 as standard, KCP command set |
| Power supply | Plug-in mains adaptor, 100 V to 240 V, 50/60 Hz, output 12 V, 500 mA; country adaptors EU, UK, US, CH in the scope of delivery |
| Rechargeable battery (optional) | internal, GAB-A04 (lead); operating time 90 h without and 50 h with backlight, charging time 12 h |
| Ambient temperature | 0 °C to 40 °C (N models); -10 °C to 40 °C (DM models) |
| Humidity | 0 % to 80 % |
| Storage temperature | -20 °C to +60 °C |
| Net weight | approx. 3.2 kg (CPB 6K0.1N); 3.4 kg (CPB 15K0.2N, 30K0.5N, 6K1DM); 3.6 kg (CPB 15K2DM, 30K5DM) |
| Conformity assessment under NAWI (2014/31/EU) | DM models only, optionally ex works, item no. 965-228; accuracy class III |
| DAkkS calibration certificate | can be ordered separately, item no. 963-128 |
| Warranty (manufacturer) | 24 months according to Kern, excluding wear parts |
Scope of delivery
- Kern CPB counting balance with stainless steel weighing plate
- Plug-in mains adaptor with country adaptors for EU, UK, US and CH
- Working protective cover
The rechargeable battery is not included in the scope of delivery.
Calibration
A DAkkS calibration certificate (item no. 963-128) can be ordered separately for all models. The confirmation of manufacturer specification (969-517) is only available in conjunction with the DAkkS calibration certificate.
Warranty
According to Kern & Sohn, these devices come with a 2-year warranty. Kern grants 3 years on products with a list price of €500 or more and 2 years on products below that and on components; wear parts such as batteries and rechargeable batteries are excluded. Warranty repairs are carried out by Kern or by a Kern dealer.
Downloads
Regulatory information
As electrical devices, the balances fall under the ElektroG. The manufacturer Kern & Sohn GmbH is registered under the WEEE registration number DE 80821200. How to return old appliances is described on the page Environment and disposal.
Individual requirements and procurement service
The rechargeable battery GAB-A04, the signal lamp (CFS-A03), the RS-232 interface cable (CFS-A01) and the RS-232 Y interface cable (CFS-A04), working protective covers (CFS-A02, CFS-A02S05 with 5 pieces), the stainless steel fruit bowl (RFS-A02), plug-in mains adaptors (PFB-A02 for EU and CH, PFB-A03 for UK, PFB-A04 for US, YKA-11 for EU, AUS, UK, US and CH), thermal printers (YKC-01, YKH-01), dot-matrix printer (YKG-01), needle printer (YKT-01), RS232 Bluetooth adapter (YKI-02), RS232 Ethernet converters (YKI-10, YKI-11), RS232 WLAN converter (YKI-12) and the RS232 to USB converter (AFH 13) are also available. Enquiries are handled via our procurement service.
| Weighing range (Max): | 30 kg |
|---|---|
| Readability (d): | 5 g |
| Verifiable: | yes |
| Design: | CPB 30K5DM · 30 kg |