Kern CXB 3K0.2 counting balance 3 kg / 0.2 g
€315.00
% Manufacturer's RRP: €350.00 10% below manufacturer's RRP
- Weighing range 3 kg, readability 0.2 g
- Reproducibility 0.2 g, linearity ± 0.4 g, stabilisation time 2 s
- Not verifiable, readability finer than on the NM models with the same weighing range
- Minimum unit weight 200 mg (laboratory), adjustment weights 2 kg (M1) and 1 kg (M1)
- Three displays, fill-to-target with audible and visual signal, PRE-TARE
- Built-in lead-acid rechargeable battery up to 200 h without backlight, ESD protection
Product information "Kern CXB 3K0.2 counting balance 3 kg / 0.2 g"
The Kern CXB is a counting balance for stocktaking and order picking with three displays, a fill-to-target function and a built-in rechargeable battery. Kern calls it an entry-level model for professional counting. Eight models are available, weighing up to 3 kg, 6 kg, 15 kg or 30 kg. Four of them have the ending NM (CXB 3K1NM, 6K2NM, 15K5NM and 30K10NM) and can optionally be ordered with a conformity assessment under the NAWI Directive (2014/31/EU). The other four (CXB 3K0.2, 6K0.5, 15K1 and 30K2) have a finer readability and are not verifiable.
Verifiable and non-verifiable models
Same weighing range, but different readability: the CXB 3K0.2 has a readability of 0.2 g, whilst the CXB 3K1NM has a readability of 1 g. Accordingly, the CXB 6K0.5 and 6K2NM, the CXB 15K1 and 15K5NM, and the CXB 30K2 and 30K10NM are comparable models. The NM models have a coarser readability; their verification value e corresponds to the readability. With conformity assessment, accuracy class III applies. The minimum load is 20 g (CXB 3K1NM), 40 g (6K2NM), 100 g (15K5NM) and 200 g (30K10NM). Conformity assessment is only possible ex works: item no. 965-227 for the CXB 3K1NM, item no. 965-228 for the CXB 6K2NM, 15K5NM and 30K10NM. According to Kern, a retrospective conformity assessment is not possible. To place an order, Kern needs the full address of the installation site.
Counting and fill-to-target
Three displays with 18 mm high digits show total weight, reference weight and total piece count simultaneously. The reference piece count or reference weight is entered via the keypad; ten reference weights can be stored. 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. Depending on the model, the minimum unit weight for piece counting ranges from 200 mg to 10 g under laboratory conditions (model table).
With the fill-to-target function, a target piece count or a target weight is programmed; reaching it is indicated by an audible and visual signal. The PRE-TARE function subtracts the known weight of a container in advance. At the touch of a button, the balance switches from counting mode to weighing mode. According to Kern, integrated ESD protection makes the balance suitable for weighing small plastic parts.
Rechargeable battery and mains connection
The built-in lead-acid rechargeable battery (6 V, 4 Ah) is part of the scope of delivery. According to the data sheet, it lasts 200 h with the backlight off and 60 h with the backlight on and charges in 8 h. The backlight switches off after 5 s; automatic switch-off in battery operation can be selected. The power supply is built in (220 V to 240 V AC, 50 Hz); it is connected via an IEC power cable. The EU version is part of the scope of delivery; cables for UK and CH are also available.
Weighing pan, housing and adjustment
All models have the same stainless steel weighing pan measuring 300 x 225 mm and a plastic housing measuring 300 x 330 x 110 mm. A spirit level and adjustable feet are part of the equipment. Adjustment is carried out externally using class M1 weights; the recommended values are listed in the model table. This does not replace a calibration certificate, which is available separately (see below). The permissible range is -10 °C to 40 °C and 15 % to 85 % humidity.
Typical applications
- Warehouse logistics: stocktaking of parts up to 30 kg total weight
- Packaging industry: order picking by target piece count or target weight
- Retail: counting and weighing in weighing mode
- Fill quantity check with container weight deducted
- Counting small plastic parts thanks to ESD protection
For stocktaking and order picking without official use, the models with fine readability are suitable. Anyone who needs a conformity assessment orders one of the NM models with the option straight away.
Models at a glance
| Model | Weighing range (Max) | Readability (d) | Reproducibility | Linearity | Minimum unit weight (laboratory / normal) | Recommended adjustment weights | Conformity assessment (NAWI) |
|---|---|---|---|---|---|---|---|
| CXB 3K0.2 | 3 kg | 0.2 g | 0.2 g | ± 0.4 g | 200 mg / 2 g | 2 kg (M1) and 1 kg (M1) | no |
| CXB 6K0.5 | 6 kg | 0.5 g | 0.5 g | ± 1 g | 500 mg / 5 g | 5 kg (M1) | no |
| CXB 15K1 | 15 kg | 1 g | 1 g | ± 2 g | 1 g / 10 g | 10 kg (M1) and 5 kg (M1) | no |
| CXB 30K2 | 30 kg | 2 g | 2 g | ± 4 g | 2 g / 20 g | 20 kg (M1) and 10 kg (M1) | no |
| CXB 3K1NM | 3 kg | 1 g | 1 g | ± 2 g | 1 g / 10 g | 2 kg (M1) and 1 kg (M1) | optional ex works, 965-227, class III, e = 1 g, minimum load 20 g |
| CXB 6K2NM | 6 kg | 2 g | 2 g | ± 4 g | 2 g / 20 g | 6 kg (M1) | optional ex works, 965-228, class III, e = 2 g, minimum load 40 g |
| CXB 15K5NM | 15 kg | 5 g | 5 g | ± 10 g | 5 g / 50 g | 10 kg (M1) and 5 kg (M1) | optional ex works, 965-228, class III, e = 5 g, minimum load 100 g |
| CXB 30K10NM | 30 kg | 10 g | 10 g | ± 20 g | 10 g / 100 g | 20 kg (M1) and 10 kg (M1) | optional ex works, 965-228, class III, e = 10 g, minimum load 200 g |
Technical details
These values apply to all models. Deviating values are given in the model table.
| Weighing system | Strain gauge |
| Stabilisation time | 2 s |
| Weighing pan | Stainless steel, 300 x 225 mm |
| Housing | Plastic, 300 x 330 x 110 mm |
| Display | LCD, backlit, three displays, digit height 18 mm |
| Memory | 10 reference weights |
| Protection | integrated ESD protection |
| Adjustment | external |
| Mains connection | built-in power supply, 220 V to 240 V AC, 50 Hz, IEC power cable (EU cable in the scope of delivery) |
| Rechargeable battery | Lead, 6 V, 4 Ah, built-in; operating time 200 h without and 60 h with backlight, charging time 8 h |
| Transport classification of rechargeable battery (Kern) | Lead acid, UN 2800 |
| Net weight | approx. 4.0 kg (CXB 15K5NM: 3.8 kg) |
| Ambient temperature | -10 °C to 40 °C |
| Humidity | 15 % to 85 % |
| Conformity assessment under NAWI (2014/31/EU) | NM models only, optional ex works: item no. 965-227 (CXB 3K1NM), 965-228 (CXB 6K2NM, 15K5NM, 30K10NM) |
| DAkkS calibration certificate | available to order separately: item no. 963-127 (CXB 3K0.2, 3K1NM), 963-128 (all other models) |
| Warranty (manufacturer) | 24 months according to Kern, excluding wear parts |
Scope of delivery
- Kern CXB counting balance with stainless steel weighing plate and built-in rechargeable battery
- Mains cable for the EU
- Working protective cover
Calibration
A DAkkS calibration certificate can be ordered separately: item no. 963-127 for the CXB 3K0.2 and 3K1NM, item no. 963-128 for the remaining six 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
A replacement rechargeable battery (GAB-A04), working protective covers (CXB-A01, CXB-A01S05 with 5 pieces), the stainless steel fruit bowl (RFS-A02) and IEC power cables for EU (MLB-A07), UK (822-903) and CH (YKK-01) and the Schuko adaptor for UK (YKA-01) are also available. Kern lists the Safety Set 315-412-408, comprising weights of 200 g (M1) and 2,000 g (M1), as test weights for the CXB 3K0.2 and CXB 3K1NM, and the test weight 346-76 (5 kg, OIML class M1) for the CXB 6K0.5. Enquiries are handled via our procurement service.
| Weighing range (Max): | 3 kg |
|---|---|
| Readability (d): | 0.2 g |
| Verifiable: | no |
| Design: | CXB 3K0.2 · 3 kg |